Upper Extremity Muscles Flashcards

1
Q

Trapezius origin

A

occipital bone, spinous process

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2
Q

Trapezius insertion

A

scapular spine, acromion, distal clavicle

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3
Q

Trapezius action

A

elevate, depress, adduct scapula

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4
Q

Rhomboids origin

A

spinous process

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5
Q

Rhomboids insertion

A

medial border of scapula

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6
Q

Levator scapulae origin

A

transverse process

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7
Q

Levator scapulae insertion

A

superior angle of scapula

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8
Q

Levator scapulae action

A

elevate scapula

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9
Q

Pectoralis minor origin

A

ribs

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10
Q

Pectoralis minor insertion

A

coracoid process of scapula

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11
Q

Pectoralis minor action

A

depress scapula

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12
Q

Serratus anterior origin

A

ribs

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13
Q

Serratus anterior insertion

A

medial border of scapula

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14
Q

Serratus anterior action

A

abduct scapula

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15
Q

Pectoralis major origin

A

sternum and clavicle

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16
Q

Pectoralis major instertion

A

greater tubercle of humerus

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17
Q

Pectoralis major action

A

flex and adduct arm

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18
Q

Coracobrachialis origin

A

coracoid process of scapula

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19
Q

Coracobrachialis insertion

A

proximal humerus

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20
Q

Coracobrachialis action

A

flex and adduct arm

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21
Q

Lastissimus dorsi origin

A

spinous process, iliac crest

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22
Q

Lastissimus dorsi insertion

A

lesser tubercle of humerus

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23
Q

Lastissimus dorsi action

A

extend and adduct arm

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24
Q

Teres major origin

A

inferior angle of scapula

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25
Q

Teres major insertion

A

lesser tubercle of humerus

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26
Q

Teres major action

A

extend and adduct arm

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27
Q

Deltoid origin

A

scapular spine, acromion, clavicle

28
Q

Deltoid insertion

A

deltoid tuberosity of humerus

29
Q

Deltoid action

A

abduct, flex, and extend arm

30
Q

4 rotator cuff muscles

A

supraspinatus, infraspinatus, teres minor, subscapularis

31
Q

Supraspinatus origin

A

supraspinatus fossa of scapula

32
Q

Infraspinatus origin

A

infraspinatus fossa of scapula

33
Q

Teres minor origin

A

lateral border of scapula

34
Q

Rotator cuff muscles insertion

A

greater tubercle of humerus

35
Q

Supraspinatus action

A

abduct arm

36
Q

Infraspinatus and teres minor action

A

laterally rotate arm

37
Q

Subscapularis origin

A

subscapular fossa of scapula

38
Q

Subscapularis insertion

A

lesser tubercle of humerus

39
Q

Subscapularis action

A

medially rotate arm

40
Q

Biceps brachii origin

A

long head: above glenoid fossa short head: coracoid process of scapula

41
Q

Biceps brachii insertion

A

radial tuberosity of radius (spans 2 joints!)

42
Q

Biceps brachii action

A

flex and supinate forearm

43
Q

Brachialis origin

A

distal humerus

44
Q

Brachialis insertion

A

proximal ulna

45
Q

Brachialis action

A

flex forearm

46
Q

Brachioradialis origin

A

distal lateral humerus

47
Q

Brachioradialis insertion

A

styloid process of radius

48
Q

Brachioradialis action

A

flex forearm

49
Q

Triceps brachii lateral head origin

A

lateral surface of humerus

50
Q

Triceps brachii long head origin

A

below glenoid fossa

51
Q

Triceps brachii medial head origin

A

posterior surface of humerus

52
Q

Triceps brachii insertion

A

olecranon process of ulna

53
Q

Triceps brachii action

A

extend forearm

54
Q

Pronator teres and pronator quadratus origin

A

ulna

55
Q

Pronator teres and pronator quadratus insertion

A

radius

56
Q

Pronator teres and pronator quadratus action

A

pronate forearm

57
Q

Supinator origin

A

proximal ulna

58
Q

Supinator insertion

A

proximal radius

59
Q

Supinator action

A

supinate forearm

60
Q

Forearm flexors origin

A

medial epicondyles of humerus, radius, ulna

61
Q

Forearm flexors insertion

A

carpals, metacarpals, phalanges

62
Q

Forearm flexors action

A

flex wrist, fingers, thumb

63
Q

Forearm extensors origin

A

lateral epicondyles of humerus, radius, ulna

64
Q

Forearm extensors insertion

A

carpals, metacarpals, phalanges

65
Q

Forearm extensors action

A

extend wrist, fingers, thumb, abduct thumb

66
Q

Intrinsic muscle of the thumb

A

thenar

67
Q

Intrinsic muscle of the pinky

A

hypothenar