Muscles Of Upper Arm And Shoulder

Question 1

What is the insertion of the subclavius?

Answer 1

The acromial end of the clavicle - inferior

Question 2

What is the action of the subclavius?

Answer 2

Pulls tip of shoulder down and pulls clavicle medially

Question 3

What is the nerve supply to the subclavius?

Answer 3

Nerve to subclavius

Question 4

What is the arterial supply to the subclavius?

Answer 4

Clavicular branch of the thoracoacromial artery

Question 5

What is the origin of the subscapularis?

Answer 5

Subscapular fossa of the scapula

Question 6

What is the insertion of the subscapularis?

Answer 6

Lesser tubercle of the humerus

Question 7

What is the action of the subscapularis?

Answer 7

Internal rotation at shoulder

Question 8

What is the nerve supply to the subscapularis?

Answer 8

Subscapular nerve

Question 9

What is the arterial supply to the subscapularis?

Answer 9

Subscapular artery

Question 10

The tendons of which 4 muscles make up the rotator cuff of the shoulder joint?

Answer 10

Subscapularis, supraspinatus, infraspinatus and teres minor

Question 11

What is the origin of the coracobrachialis?

Answer 11

Coracoid process of the scapula

Question 12

What is the insertion of the coracobrachialis?

Answer 12

Upper one third of the frontal humerus

Question 13

What is the action of the coracobrachialis?

Answer 13

Flexion and adduction at shoulder

Question 14

What is the nerve supply to the coracobrachialis?

Answer 14

Musculocutaneous nerve

Question 15

What is the arterial supply to the coracobrachialis?

Answer 15

Brachial artery

Question 16

What is the origin of the supraspinatus?

Answer 16

Supraspinous fossa of the scapula

Question 17

What is the insertion of the supraspinatus?

Answer 17

Greater tubercle of the humerus

Question 18

What is the action of supraspinatus?

Answer 18

Abduction of the arm to 15 degrees

Question 19

What is the nerve supply to the supraspinatus?

Answer 19

Suprascapular nerve

Question 20

What is the arterial supply to the supraspinatus?

Answer 20

Suprascapular artery

Question 21

What is the origin of the infraspinatus?

Answer 21

Infraspinous fossa of scapula

Question 22

What is the insertion of the infraspinatus?

Answer 22

greater tubercle of the humerus

Question 23

What is the action of the infraspinatus?

Answer 23

External rotation of arm

Question 24

What is the nerve supply to the infraspinatus?

Answer 24

Suprascapular nerve (C5, C6)

Question 25

What is the arterial supply to the infraspinatus?

Answer 25

circumflex scapular artery and suprascapular artery

Question 26

What is the origin of teres minor?

Answer 26

Upper two thirds of lateral margin of scapula

Question 27

What is the insertion of teres minor?

Answer 27

Greater tubercle of humerus

Question 28

What is the action of teres minor?

Answer 28

External rotation

Question 29

What is the nerve supply to teres minor?

Answer 29

Axillary nerve

Question 30

What is the arterial supply to teres minor?

Answer 30

Circumflex scapular artery and posterior circumflex humeral artery

Question 31

What is the origin of the long head of biceps brachii?

Answer 31

Supraglenoid tubercle of scapula

Question 32

What is the insertion of the long head of biceps brachii?

Answer 32

Radial tuberosity

Question 33

What is the action of the long head of biceps brachii?

Answer 33

Flexion of elbow and shoulder, supinator of forearm

Question 34

What is the nerve supply to the long head of biceps brachii?

Answer 34

Musculocutaneous nerve

Question 35

What is the arterial supply to the long head of biceps brachii?

Answer 35

Brachial artery

Question 36

What is the origin of the short head of biceps brachii?

Answer 36

Coracoid process of scapula

Question 37

What is the insertion of the short head of biceps brachii?

Answer 37

Radial tuberosity

Question 38

What is the action of the short head of biceps brachii?

Answer 38

Flexion of elbow and shoulder, supination of forearm

Question 39

What is the nerve supply to the short head of biceps brachii?

Answer 39

Musculocutaneous nerve

Question 40

What is the arterial supply to the short head of biceps brachii?

Answer 40

brachial artery

Question 41

What is the origin of the deltoid?

Answer 41

Acromion, crest of the spine of the scapula and the lateral one third of the clavicle

Question 42

What is the insertion of the deltoid?

Answer 42

Deltoid tuberosity of the humerus

Question 43

What is the action of the deltoid?

Answer 43

Abduction Via anterior fibres = Flexion Via posterior fibres = Extension

Question 44

What is the nerve supply to the deltoid?

Answer 44

Axillary nerve

Question 45

What is the arterial supply to the deltoid?

Answer 45

Posterior circumflex humeral artery

Question 46

What is the origin of the teres major?

Answer 46

Dorsal surface of the inferior angle of the scapula

Question 47

What is the insertion of teres major?

Answer 47

Crest of the lesser tubercle of the humerus

Question 48

What is the action of teres major?

Answer 48

Internal rotation, adduction and extension of shoulder

Question 49

What is the nerve supply to teres major?

Answer 49

Subscapular nerve

Question 50

What is the arterial supply to teres major?

Answer 50

Circumflex scapular artery and subscapular artery

Question 51

What is the origin of the subclavius?

Answer 51

Costal cartilage and first rib

Question 52

What is the origin of the brachialis?

Answer 52

Distal anterior humerus

Question 53

What is the insertion of the brachialis?

Answer 53

Coronoid process of ulna

Question 54

What is the action of brachialis?

Answer 54

Flexion at elbow

Question 55

What is the nerve supply to brachialis?

Answer 55

Musculocutaneous nerve

Question 56

What is the arterial supply to brachialis?

Answer 56

Brachial artery

Question 57

Where does the triceps insert?

Answer 57

Olecranon fossa