Shoulder Muscles

Question 1

Anterior deltoid origin

Answer 1

Lateral 1/3 clavicle

Question 2

Anterior deltoid insertion

Answer 2

Deltoid tuberosity

Question 3

Anterior deltoid action

Answer 3

Flexion, medial rotation

Question 4

Anterior deltoid innervation

Answer 4

Axillary nerve

Question 5

Anterior deltoid blood supply

Answer 5

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery

Question 6

Middle deltoid origin

Answer 6

Acromion

Question 7

Middle deltoid insertion

Answer 7

Deltoid tuberosity

Question 8

Middle deltoid action

Answer 8

Abduction of arm

Question 9

Middle deltoid innervation

Answer 9

Axillary nerve

Question 10

Middle deltoid blood supply

Answer 10

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery

Question 11

Posterior deltoid origin

Answer 11

Spine of scapula

Question 12

Posterior deltoid insertion

Answer 12

Deltoid tuberosity

Question 13

Posterior deltoid action

Answer 13

Extension and lateral rotation

Question 14

Posterior deltoid innervation

Answer 14

Axillary nerve

Question 15

Posterior deltoid blood supply

Answer 15

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery

Question 16

Biceps brachii long head origin

Answer 16

Supraglenoid tubercle of scapula

Question 17

Biceps brachii long head insertion

Answer 17

Radial tuberosity and bicipital aponeurosis into fascia of forearm

Question 18

Biceps brachii long head action

Answer 18

Flexion of forearm and arm, supination of forearm

Question 19

Biceps brachii long head innervation

Answer 19

Musculocutaneous nerve

Question 20

Biceps brachii long head blood supply

Answer 20

Brachial artery

Question 21

Biceps brachii short head origin

Answer 21

Tip of Corocoid process of scapula

Question 22

Biceps brachii short head insertion

Answer 22

Radial tuberosity and bicipital aponeurosis into fascia of forearm

Question 23

Biceps brachii short head action

Answer 23

Flexion of arm and forearm, supination of forearm

Question 24

Biceps brachii short head innervation

Answer 24

Musculocutaneous nerve

Question 25

Biceps brachii short head blood supply

Answer 25

Brachial artery

Question 26

Corocobrachialis origin

Answer 26

Corocoid process

Question 27

Corocobrachialis insertion

Answer 27

Anteromedial surface of midshaft of humerus

Question 28

Corocobrachialis action

Answer 28

Flexion and adduction of arm

Question 29

Corocobrachialis innervation

Answer 29

Musculocutaneous nerve

Question 30

Corocobrachialis blood supply

Answer 30

Brachial artery

Question 31

Triceps brachii long head origin

Answer 31

Infraglenoid tubercle of scapula

Question 32

Triceps brachii long head action

Answer 32

Extension of forearm, extension of shoulder

Question 33

Triceps brachii (all heads) insertion

Answer 33

Proximal end of olecranon

Question 34

Triceps brachii (all heads) innervation

Answer 34

Radial nerve

Question 35

Triceps brachii (all heads) blood supply

Answer 35

Brachial artery (profunda)

Question 36

Triceps brachii lateral head origin

Answer 36

Posterior surface of humerus above and lateral to groove of radial nerve

Question 37

Triceps brachii lateral head action

Answer 37

Extension of forearm

Question 38

Triceps brachii medial head origin

Answer 38

Posterior surface of humerus below and medial to groove for radial nerve

Question 39

Triceps brachii medial head action

Answer 39

Extension of forearm

Question 40

Teres major origin

Answer 40

Posterior surface of inferior angle of scapula

Question 41

Teres major insertion

Answer 41

Medial lip of intertubercular groove

Question 42

Teres major action

Answer 42

Adduction, medial rotation, and extension of arm

Question 43

Teres major innervation

Answer 43

Lower subscapular nerve

Question 44

Teres major blood supply

Answer 44

Circumflex scapular artery

Question 45

Teres minor origin

Answer 45

Upper two thirds of lateral border of scapula

Question 46

Teres minor insertion

Answer 46

Greater tubercle below infraspinatus

Question 47

Teres minor action

Answer 47

Lateral rotation of arm

Question 48

Teres minor innervation

Answer 48

Axillary nerve

Question 49

Teres minor blood supply

Answer 49

Circumflex scapular

Question 50

Subscapularis origin

Answer 50

Subscapular fossa of scapula

Question 51

Subscapularis insertion

Answer 51

Lesser tubercle and crest

Question 52

Subscapularis action

Answer 52

Medial rotation of arm

Question 53

Subscapularis innervation

Answer 53

Upper and lower subscapular nerve

Question 54

Subscapularis blood supply

Answer 54

Lateral thoracic and subscapular

Question 55

Infraspinatus origin

Answer 55

Infraspinous fossa of scapula

Question 56

Infraspinatus insertion

Answer 56

Greater tubercle inferior to supraspinatus

Question 57

Infraspinatus action

Answer 57

Lateral rotation of arm

Question 58

Infraspinatus innervation

Answer 58

Suprascapular nerve

Question 59

Infraspinatus blood supply

Answer 59

Suprascapular and circumflex scapular

Question 60

Supraspinatus origin

Answer 60

Supraspinous fossa of scapula

Question 61

Supraspinatus insertion

Answer 61

Greater tubercle

Question 62

Supraspinatus action

Answer 62

Abduction of arm

Question 63

Supraspinatus innervation

Answer 63

Suprascapular nerve

Question 64

Supraspinatus blood supply

Answer 64

Suprascapular