Anatomy I Review

Question 1

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 1

Origin: Suprascapular fossa

Insertion: Greater tubercle of the humerus

Action: Abduct the shoulder

Innervation: Suprascapular nerve C4,5,6

Question 2

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 2

Origin: Infraspinatus fossa

Insertion: Greater tubercle of the humerus

Action: Laterally rotate the shoulder, adduct the shoulder

Innervation: Suprascapular nerve C4,5,6

Question 3

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 3

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula

Insertion: Deltoid tuberosity

Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct

Innervation: Axillary nerve C5,6

Question 4

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 4

Origin: Inferior angle and Lower 1/3 of lateral border of scapula
Insertion: Crest of the lesser tubercle
Action: Extend, adduct, medially rotate
Innervation: Lower subscapular C5,6,7

Question 5

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 5

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12

Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula

Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula

Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 6

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 6

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest

Insertion: Intertubercular groove of the humerus

Action: Extend, adduct, medially rotate

Innervation: Thoracodorsal C6,7,8

Question 7

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 7

Origin: Suprascapular fossa

Insertion: Greater tubercle of the humerus

Action: Abduct the shoulder

Innervation: Suprascapular nerve C4,5,6

Question 8

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 8

Origin: Infraspinatus fossa

Insertion: Greater tubercle of the humerus

Action: Laterally rotate the shoulder, adduct the shoulder

Innervation: Suprascapular nerve C4,5,6

Question 9

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 9

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula

Insertion: Deltoid tuberosity

Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct

Innervation: Axillary nerve C5,6

Question 10

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 10

Origin: Inferior angle and Lower 1/3 of lateral border of scapula

Insertion: Crest of the lesser tubercle

Action: Extend, adduct, medially rotate

Innervation: Lower subscapular C5,6,7

Question 11

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 11

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12
Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula
Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula
Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 12

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 12

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest
Insertion: Intertubercular groove of the humerus
Action: Extend, adduct, medially rotate
Innervation: Thoracodorsal C6,7,8

Question 13

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 13

Origin: Suprascapular fossa
Insertion: Greater tubercle of the humerus
Action: Abduct the shoulder
Innervation: Suprascapular nerve C4,5,6

Question 14

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 14

Origin: Infraspinatus fossa
Insertion: Greater tubercle of the humerus
Action: Laterally rotate the shoulder, adduct the shoulder
Innervation: Suprascapular nerve C4,5,6

Question 15

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 15

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula
Insertion: Deltoid tuberosity
Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct
Innervation: Axillary nerve C5,6

Question 16

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 16

Origin: Inferior angle and Lower 1/3 of lateral border of scapula
Insertion: Crest of the lesser tubercle
Action: Extend, adduct, medially rotate
Innervation: Lower subscapular C5,6,7

Question 17

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 17

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12
Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula
Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula
Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 18

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 18

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest
Insertion: Intertubercular groove of the humerus
Action: Extend, adduct, medially rotate
Innervation: Thoracodorsal C6,7,8

Question 19

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 19

Origin: Suprascapular fossa
Insertion: Greater tubercle of the humerus
Action: Abduct the shoulder
Innervation: Suprascapular nerve C4,5,6

Question 20

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 20

Origin: Infraspinatus fossa
Insertion: Greater tubercle of the humerus
Action: Laterally rotate the shoulder, adduct the shoulder
Innervation: Suprascapular nerve C4,5,6

Question 21

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 21

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula
Insertion: Deltoid tuberosity
Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct
Innervation: Axillary nerve C5,6

Question 22

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 22

Origin: Inferior angle and Lower 1/3 of lateral border of scapula
Insertion: Crest of the lesser tubercle
Action: Extend, adduct, medially rotate
Innervation: Lower subscapular C5,6,7

Question 23

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 23

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12
Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula
Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula
Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 24

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 24

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest
Insertion: Intertubercular groove of the humerus
Action: Extend, adduct, medially rotate
Innervation: Thoracodorsal C6,7,8

Question 25

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 25

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 26

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 26

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 27

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 27

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 28

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 28

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 29

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 29

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 30

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 30

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 31

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 31

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 32

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 32

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 33

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 33

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 34

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 34

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 35

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 35

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 36

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 36

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 37

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 37

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 38

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 38

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 39

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 39

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 40

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 40

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 41

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 41

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 42

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 42

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 43

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 43

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 44

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 44

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 45

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 45

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 46

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 46

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 47

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 47

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 48

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 48

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 49

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 49

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 50

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 50

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 51

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 51

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 52

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 52

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 53

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 53

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 54

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 54

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 55

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 55

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 56

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 56

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 57

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 57

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 58

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 58

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 59

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 59

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 60

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 60

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 61

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 61

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 62

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 62

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 63

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 63

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 64

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 64

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 65

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 65

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 66

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 66

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 67

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 67

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 68

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 68

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 69

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 69

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 70

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 70

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 71

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 71

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 72

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 72

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 73

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 73

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 74

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 74

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 75

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 75

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 76

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 76

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 77

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 77

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 78

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 78

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 79

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 79

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 80

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 80

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 81

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 81

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 82

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 82

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 83

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 83

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 84

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 84

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 85

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 85

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 86

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 86

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 87

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 87

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 88

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 88

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 89

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 89

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 90

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 90

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 91

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 91

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 92

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 92

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 93

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 93

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 94

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 94

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 95

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 95

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 96

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 96

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 97

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 97

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 98

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 98

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 99

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 99

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 100

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 100

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 101

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 101

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 102

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 102

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 103

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 103

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 104

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 104

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 105

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 105

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 106

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 106

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 107

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 107

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 108

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 108

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 109

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 109

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 110

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 110

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 111

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 111

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 112

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 112

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 113

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 113

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 114

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 114

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 115

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 115

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 116

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 116

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 117

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 117

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 118

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 118

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 119

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 119

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 120

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 120

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 121

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 121

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 122

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 122

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 123

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 123

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 124

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 124

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 125

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 125

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 126

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 126

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 127

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 127

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 128

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 128

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 129

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 129

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 130

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 130

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 131

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 131

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 132

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 132

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 133

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 133

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 134

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 134

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 135

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 135

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 136

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 136

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 137

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 137

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 138

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 138

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 139

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 139

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 140

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 140

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 141

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 141

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 142

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 142

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 143

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 143

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 144

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 144

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8

Question 145

What is the origin, insertion, action, and innervation of the Supraspinatus?

Answer 145

Origin: Suprascapular fossa Insertion: Greater tubercle of the humerus Action: Abduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 146

What is the origin, insertion, action, and innervation of the Infraspinatus?

Answer 146

Origin: Infraspinatus fossa Insertion: Greater tubercle of the humerus Action: Laterally rotate the shoulder, adduct the shoulder Innervation: Suprascapular nerve C4,5,6

Question 147

What is the origin, insertion, action, and innervation of the Deltoid?

Answer 147

Origin: Lateral 1/3 of clavicle, acromion, and spine of scapula Insertion: Deltoid tuberosity Action: All: abduct; Anterior fibers: flex, medially rotate, horizontally adduct; Posterior fibers: extend, laterally rotate, horizontally abduct Innervation: Axillary nerve C5,6

Question 148

What is the origin, insertion, action, and innervation of the Teres Major?

Answer 148

Origin: Inferior angle and Lower 1/3 of lateral border of scapula Insertion: Crest of the lesser tubercle Action: Extend, adduct, medially rotate Innervation: Lower subscapular C5,6,7

Question 149

What is the origin, insertion, action, and innervation of the Trapezius?

Answer 149

Origin: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes of C7-T12 Insertion: Lateral 1/3 of clavicle, acromion, and spine of the scapula Action: Upper fibers: Bilaterally: extend the head and neck; Unilaterally: Laterally flex, rotate, elevate, upwardly rotate the scapula; Middle fibers: adduct; Lower fibers: Depress the scapula, upwardly rotate the scapula Innervation: Spinal portion of cranial nerve XI and ventral ramus C2,3,4

Question 150

What is the origin, insertion, action, and innervation of the Latissimus Dorsi?

Answer 150

Origin: Inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest Insertion: Intertubercular groove of the humerus Action: Extend, adduct, medially rotate Innervation: Thoracodorsal C6,7,8