Shoulder muscles

Question 1

What are the actions of the trapezius?

Answer 1

Elevation
Depression
Retraction
Lateral rotation

Question 2

What is the blood supply of the trapezius?

Answer 2

CErvical artery

Question 3

What is the innervation of the trapezius?

Answer 3

Accessory nerve- CN XI

Question 4

What are the attachments of the trapezius?

Answer 4

Skull, nuchal ligament, C7-T12

Clavicle, acromion, spine of scapula

Question 5

What are the actions of the latissimus dorsi?

Answer 5

Extension
Adduction
Medial rotation

Question 6

What is the blood supply of the latissimus dorsi?

Answer 6

Subscapular artery

Question 7

What is the innervation of the latissimus dorsi?

Answer 7

Thorcodorsal nerve

Question 8

What are the attachments of the latissimus dorsi?

Answer 8

T6-12, iliac crest, thoracolumbar fascia, inferior 3 ribs

Intertubercular sulcus of humerus

Question 9

What are the actions of the rhomboid major?

Answer 9

Elevation

Adduction

Question 10

What is the blood supply of th rhomboid major?

Answer 10

Dorsal scapular artery

Question 11

What is the innervation of the rhomboid major?

Answer 11

Dorsal scapular nerve

Question 12

What is the attachment of the rhomboid major?

Answer 12

T2-5

Medial border of scapula

Question 13

What is the action of the rhomboid minor?

Answer 13

Elevation
Retraction
Medial rotation

Question 14

What is the blood supply of the rhomboid minor?

Answer 14

Transverse cervical artery

Question 15

What is the innervation of the rhomboid minor?

Answer 15

Dorsal scapular nerve

Question 16

What are the attachments of the rhomboid minor?

Answer 16

C7-T1

Medial border of scapula

Question 17

What are the actions of the levator scapulae?

Answer 17

Elevation

Medial rotation

Question 18

What is the blood supply of the levator scapulae?

Answer 18

Dorsal scapular artery

Question 19

What is the innervation of the leaver scapulae?

Answer 19

Dorsal scapular artery

Question 20

What are the attachments of the levator scapulae?

Answer 20

C1-4 transverse proceses

Medial border of scapula

Question 21

What are the actions of the pectorals major?

Answer 21

Flexion

Adduction

Question 22

What is the blood supply of the pectorals major?

Answer 22

Pectoral branch

Question 23

What is the innervation of the pectorals major?

Answer 23

Pectoral nerves

Question 24

What are the attachments of the pectoralis major?

Answer 24

Clvicle, sternum, superior 6 costs cartilages, aponeurosis of external oblique
Bicipital groove of humerus

Question 25

What is the action of the pectoralis minor?

Answer 25

Medial rotation

Question 26

What is the innervation of the pectoralis minor?

Answer 26

Medial pectoral nerve

Question 27

What are the attachments of the pectoralis minor?

Answer 27

Ribs 3-5 | Coracoid process of scapula

Question 28

What are the actions of the serratus anterior?

Answer 28

Protraction | Depression

Question 29

What is the blood supply of the serratus anterior?

Answer 29

Thoracic arteries | Thoracodorsal arteries

Question 30

What is the innervation of the serratus anterior?

Answer 30

Long thoracic nerve

Question 31

What are the attachments of the serratus anterior?

Answer 31

Ribs 1-8 | Medial border of scapula

Question 32

What are the actions of the anterior deltoid?

Answer 32

Flexion | Medial rotation

Question 33

What are the actions of the middle deltoid?

Answer 33

Abduction

Question 34

What are the actions of the posterior deltoid?

Answer 34

Extension

Question 35

What is the blood supply of the deltoid?

Answer 35

Thoracoacromial artery | Humeral circumflex arteries

Question 36

What is the innervation of the deltoid?

Answer 36

Axillary nerve

Question 37

What are the attachments of the deltoid?

Answer 37

Scapula and clavicle | Deltoid tuberosity of humerus

Question 38

What are the actions of the teres major?

Answer 38

Adduction | Medial rotation

Question 39

What s the blood supply of the teres major?

Answer 39

Subscapular and circumflex scapular arteries

Question 40

What is the innervation of the teres major?

Answer 40

Lower sub scapular nerve

Question 41

What are the attachments of the teres major?

Answer 41

Posterior surface of inferior angle of scapula | Intertubercular groove of humerus

Question 42

What are the actions of the teres minor?

Answer 42

Lateral rotation

Question 43

What is the blood supply of the teres minor?

Answer 43

Circumflex humeral and circumflex scapular arteries

Question 44

What is the innervation of the teres minor?

Answer 44

Axillary nerve

Question 45

What are the attachments of the teres minor?

Answer 45

Posterior surface of scapula | Lesser tubercle of humerus

Question 46

What are the actions of the subscapularis?

Answer 46

Stabilise joint | Medial rotation

Question 47

What is the blood supply of the subscapularis?

Answer 47

Subscapular arteru

Question 48

What is the innervation of the subscapularis?

Answer 48

Subscapular nerves

Question 49

What are the attachments of the subscapularis?

Answer 49

Subscapular fossa | Lesser tubercle of humerus

Question 50

What are the actions of the supraspinatous?

Answer 50

Stabilise shoulder | First 15 degrees abduction

Question 51

What is the innervation of the supraspinatous?

Answer 51

Suprascapular artery

Question 52

What is the innervation of the supraspinatus?

Answer 52

Suprascapular nerve

Question 53

What are the attachments of the supraspinatus?

Answer 53

Supraspinatous fossa | Greater tubercle of humerus

Question 54

What are the actions of the infraspinatus?

Answer 54

Stabilise joint | Lateral rotation

Question 55

What is the blood supply of the infraspinatus?

Answer 55

Suprascapular artery | Circumflex scapular artery

Question 56

What is the innervation of the infraspinatous?

Answer 56

Suprascapular nerve

Question 57

What is the attachment of the infraspinatus?

Answer 57

Infraspinatus fossa | Greater tubercle of humerus