Shoulder Muscles Flashcards

1
Q

Anterior deltoid origin

A

Lateral 1/3 clavicle

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2
Q

Anterior deltoid insertion

A

Deltoid tuberosity

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3
Q

Anterior deltoid action

A

Flexion, medial rotation

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4
Q

Anterior deltoid innervation

A

Axillary nerve

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5
Q

Anterior deltoid blood supply

A

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery

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6
Q

Middle deltoid origin

A

Acromion

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7
Q

Middle deltoid insertion

A

Deltoid tuberosity

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8
Q

Middle deltoid action

A

Abduction of arm

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9
Q

Middle deltoid innervation

A

Axillary nerve

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10
Q

Middle deltoid blood supply

A

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery

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11
Q

Posterior deltoid origin

A

Spine of scapula

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12
Q

Posterior deltoid insertion

A

Deltoid tuberosity

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13
Q

Posterior deltoid action

A

Extension and lateral rotation

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14
Q

Posterior deltoid innervation

A

Axillary nerve

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15
Q

Posterior deltoid blood supply

A

Thoracoacromial artery, circumflex humeral arteries, profunda brachial artery

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16
Q

Biceps brachii long head origin

A

Supraglenoid tubercle of scapula

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17
Q

Biceps brachii long head insertion

A

Radial tuberosity and bicipital aponeurosis into fascia of forearm

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18
Q

Biceps brachii long head action

A

Flexion of forearm and arm, supination of forearm

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19
Q

Biceps brachii long head innervation

A

Musculocutaneous nerve

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20
Q

Biceps brachii long head blood supply

A

Brachial artery

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21
Q

Biceps brachii short head origin

A

Tip of Corocoid process of scapula

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22
Q

Biceps brachii short head insertion

A

Radial tuberosity and bicipital aponeurosis into fascia of forearm

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23
Q

Biceps brachii short head action

A

Flexion of arm and forearm, supination of forearm

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24
Q

Biceps brachii short head innervation

A

Musculocutaneous nerve

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25
Q

Biceps brachii short head blood supply

A

Brachial artery

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26
Q

Corocobrachialis origin

A

Corocoid process

27
Q

Corocobrachialis insertion

A

Anteromedial surface of midshaft of humerus

28
Q

Corocobrachialis action

A

Flexion and adduction of arm

29
Q

Corocobrachialis innervation

A

Musculocutaneous nerve

30
Q

Corocobrachialis blood supply

A

Brachial artery

31
Q

Triceps brachii long head origin

A

Infraglenoid tubercle of scapula

32
Q

Triceps brachii long head action

A

Extension of forearm, extension of shoulder

33
Q

Triceps brachii (all heads) insertion

A

Proximal end of olecranon

34
Q

Triceps brachii (all heads) innervation

A

Radial nerve

35
Q

Triceps brachii (all heads) blood supply

A

Brachial artery (profunda)

36
Q

Triceps brachii lateral head origin

A

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

37
Q

Triceps brachii lateral head action

A

Extension of forearm

38
Q

Triceps brachii medial head origin

A

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

39
Q

Triceps brachii medial head action

A

Extension of forearm

40
Q

Teres major origin

A

Posterior surface of inferior angle of scapula

41
Q

Teres major insertion

A

Medial lip of intertubercular groove

42
Q

Teres major action

A

Adduction, medial rotation, and extension of arm

43
Q

Teres major innervation

A

Lower subscapular nerve

44
Q

Teres major blood supply

A

Circumflex scapular artery

45
Q

Teres minor origin

A

Upper two thirds of lateral border of scapula

46
Q

Teres minor insertion

A

Greater tubercle below infraspinatus

47
Q

Teres minor action

A

Lateral rotation of arm

48
Q

Teres minor innervation

A

Axillary nerve

49
Q

Teres minor blood supply

A

Circumflex scapular

50
Q

Subscapularis origin

A

Subscapular fossa of scapula

51
Q

Subscapularis insertion

A

Lesser tubercle and crest

52
Q

Subscapularis action

A

Medial rotation of arm

53
Q

Subscapularis innervation

A

Upper and lower subscapular nerve

54
Q

Subscapularis blood supply

A

Lateral thoracic and subscapular

55
Q

Infraspinatus origin

A

Infraspinous fossa of scapula

56
Q

Infraspinatus insertion

A

Greater tubercle inferior to supraspinatus

57
Q

Infraspinatus action

A

Lateral rotation of arm

58
Q

Infraspinatus innervation

A

Suprascapular nerve

59
Q

Infraspinatus blood supply

A

Suprascapular and circumflex scapular

60
Q

Supraspinatus origin

A

Supraspinous fossa of scapula

61
Q

Supraspinatus insertion

A

Greater tubercle

62
Q

Supraspinatus action

A

Abduction of arm

63
Q

Supraspinatus innervation

A

Suprascapular nerve

64
Q

Supraspinatus blood supply

A

Suprascapular