Arm Muscles Origin & Insertions

Question 1

Deltoid origin

Answer 1

Sound, acromion,lateral clavicle

Question 2

Deltoid insertion

Answer 2

Deltoid tuberosity

Question 3

Deltoid action

Answer 3

Flexion, abdication, extension of the shoulder,

Question 4

Deltoid nerve innervation

Answer 4

Axillary nerve

Question 5

Pectoralis major origin

Answer 5

Lateral sternum, costal cartilage 1-7, medial clavicle

Question 6

Pectoralis major insertions

Answer 6

Intertubercular groove

Question 7

Pectoralis major action

Answer 7

Adduction and internal rotation of the shoulder

Question 8

Pectoralis major nerve innervation

Answer 8

Medial and lateral pectoral nerves

Question 9

Pectoralis minor origin

Answer 9

Coracoid process

Question 10

Pectoralis minor insertion

Answer 10

Ribs 3-5

Question 11

Pectoralis minor action

Answer 11

Depresses scapula, assists with breathing

Question 12

Pectoralis minor innervation

Answer 12

Medial pectoral

Question 13

Subscapularis origin

Answer 13

Subscapular fossa

Question 14

Subscapularis insertion

Answer 14

Lesser tubercle

Question 15

Subscapularis action

Answer 15

Internal rotation

Question 16

Subscapularis nerve innervation

Answer 16

Upper and lower scapular nerve

Question 17

Supraspinatus origin

Answer 17

Supraspinous fossa

Question 18

Supraspinatus insertion

Answer 18

Upper part of greater tubercle

Question 19

Supraspinatus action

Answer 19

Abduction

Question 20

Supraspinatus nerve innervation

Answer 20

Suprascapular nerve

Question 21

Infraspinatus origin

Answer 21

Infraspinous fossa

Question 22

Infraspinatus insertion

Answer 22

Middle part of Greater tubercle

Question 23

Infraspintus action

Answer 23

External rotation

Question 24

Infraspinutus nerve innervation

Answer 24

Suprascapular nerve

Question 25

Teres minor origin

Answer 25

Lateral border of the scapula

Question 26

Teres minor insertion

Answer 26

Lower part of great tubercle

Question 27

Teres minor action

Answer 27

External rotation

Question 28

Teres minor nerve innervation

Answer 28

axillary nerve

Question 29

Biceps brachii origin Long head

Answer 29

Supraglenoid tubercle of the scapula

Question 30

Biceps brachii origin Short head

Answer 30

Coracoid process

Question 31

Biceps brachii insertion

Answer 31

Radical tuberosity

Question 32

Biceps brachii action

Answer 32

Flexion and supination of elbow

Question 33

Biceps brachii nerve innervation

Answer 33

Musculocutaneous nerve

Question 34

Coracobrachialis origin

Answer 34

Coracoid process

Question 35

Coracobrachialis insertion

Answer 35

Medial mid humerus

Question 36

Coracobrachialis action

Answer 36

Flexion, adduction, internal rotation

Question 37

Coracobrachialis nerve innervation

Answer 37

Musculocutaneous nerve

Question 38

Brachialis origin

Answer 38

Lower half of anterior humerus

Question 39

Brachialis insertion

Answer 39

Ulnar tuberosity

Question 40

Brachialis action

Answer 40

Flexion of elbow

Question 41

Brachialis nerve innervation

Answer 41

Musculocutaneous and radial nerve

Question 42

Triceps brachii Long head origin

Answer 42

Infraglenoid tubercle of scapula

Question 43

Triceps brachii lateral head origin

Answer 43

Upper half ofposterion humerus, posterior to radial groove

Question 44

Triceps brachii medial head origin

Answer 44

Posterior medial humerus, inferior to radial groove

Question 45

Triceps brachii insertion

Answer 45

Olecranons process of ulna

Question 46

Triceps brachii action

Answer 46

Extension of elbow

Question 47

Triceps brachii nerve innervation

Answer 47

Radial nerve

Question 48

Brachioradialis origin

Answer 48

Lateral supracondylar ridge of humerus

Question 49

Brachloradialis insertion

Answer 49

Radial stylold process

Question 50

Brachioradialis action

Answer 50

Flexion of elbow

Question 51

Brachioradlalis nerve innervation

Answer 51

Radial nerve