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anatomy y1 > upper limb muscles > Flashcards

upper limb muscles Flashcards

1
Q

which nerve supplies the trapezius

A

spinal accessory

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2
Q

what are the actions of the trapezius

A

lateral rotation of scapula in abduction beyond 90 degrees
elevation
retraction
depression

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3
Q

which nerve supplies the rhomboids

A

dorsal scapula

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4
Q

what are the actions of the rhomboids

A

scapula retraction and medial rotation

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5
Q

which nerve supplies levator scapulae

A

cervical nerves

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6
Q

what is the action of levator scapulae

A

scapula elevation

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7
Q

which nerve supplies serratus anterior

A

long thoracic

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8
Q

what are the actions of serratus anterior

A

scapula protraction and lateral rotation

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9
Q

which nerve supplies pectoralis minor

A

medial pectoral

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10
Q

which nerve supplies the deltoid

A

axillary

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11
Q

what are the actions of the deltoid

A

shoulder abduction 20-90 degrees
anterior fibres: flexion of shoulder
posterior fibres: extension of shoulder

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12
Q

which nerves supply pectoralis major

A

medial and lateral pectoral nerves

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13
Q

what are the actions of pectoralis major

A

shoulder flexion
medial rotation
adduction when working with extensors
sternal head: flexes shoulder from anatomical position
clavicular head: extend shoulder from flexed position

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14
Q

which nerve supplies latissimus dorsi

A

thoracodorsal

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15
Q

what are the actions of latissimus dorsi

A

shoulder extension
medial rotation
adduction when working with flexors

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16
Q

which nerve supplies teres major

A

lower subscapular

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17
Q

what are the actions of teres major

A

shoulder extension
medial rotation
adduction when working with flexors

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18
Q

which nerve supplies supraspinatus

A

suprascapular

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19
Q

what is the action of supraspinatus

A

initiates shoulder abduction

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20
Q

which nerve supplies infraspinatus

A

suprascapular

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21
Q

what is the action of infraspinatus

A

lateral rotation of shoulder

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22
Q

which nerve supplies teres minor

A

axillary

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23
Q

what is the action of teres minor

A

lateral rotation of shoulder

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24
Q

which nerve supplies supscapularis

A

upper and lower subscapular

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25
Q

what is the action of subscapularis

A

medial rotation of shoulder

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26
Q

which nerve supplies coraco-brachialis

A

musculocuaneous

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27
Q

what is the action of coraco-brachialis

A

weak shoulder flexor

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28
Q

which nerve supplies triceps brachii

A

radial

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29
Q

what are the actions of triceps brachii

A

elbow extension
long head: shoulder extension

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30
Q

which nerve supplies biceps brachii

A

musculocutaneous

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31
Q

what are the actions of biceps brachii

A

flexion of elbow
supination of forearm

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32
Q

which nerve supplies brachialis

A

musculocutaneous

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33
Q

what is the action of brachialis

A

flexion of elbow

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34
Q

which nerve supplies the anconeus

A

radial

35
Q

what is the action of the anconeus

A

abducts ulnar during pronation of the forearm

36
Q

which nerve supplies palmaris longus

A

median

37
Q

what are the actions of palmaris longus

A

tenses palmar fascia
flexion of wrist

38
Q

which nerve supplies pronator teres

A

median

39
Q

what is the action of pronator teres

A

pronation of forearm

40
Q

which nerve supplies flexor carpi radialis

A

median

41
Q

what are the actions of flexor carpi radialis

A

flexion of wrist when working with flexor carpi ulnaris
abduction of wrist when working with extensor carpi radialis

42
Q

which nerve supplies flexor carpi ulnaris

A

ulnar

43
Q

what are the actions of flexor carpi ulnaris

A

flexion of wrist when working with flexor carpi radialis
adduction of wrist when working with extensor carpi ulnaris

44
Q

which nerve supplies flexor digitorum superficialis

A

median

45
Q

what is the action of flexor digitorum superficialis

A

flexion of the wrist, MCP, and PIP joints

46
Q

what is the action of flexor digitorum profundus

A

flexion of wrist, MCP, PIP, and DIP joints

47
Q

which nerve supplies flexor pollicis longus

A

median

48
Q

what are the actions of flexor pollicis longus

A

flexion of wrist
flexion of thumb

49
Q

which nerve supplies pronator quadratus

A

median

50
Q

what is the action of pronator quadratus

A

controls pronation in distal forearm

51
Q

which nerve supplies brachioradialis

A

superficial branch of radial

52
Q

what are the actions of brachioradialis

A

pronates/supinates to mid prone position
flexion of elbow in mid prone position

53
Q

which nerve supplies supinator

A

deep branch of radial

54
Q

what is the action of supinator

A

supination of forearm

55
Q

which nerve supplies extensor carpi radialis

A

superficial branch of radial

56
Q

what are the actions of extensor carpi radialis

A

extension of wrist when working with extensor carpi ulnaris
abduction of wrist when working with flexor carpi radialis

57
Q

which nerve supplies extensor carpi ulnaris

A

posterior interosseous branch of deep radial

58
Q

what are the actions of extensor carpi ulnaris

A

extension of wrist when working with extensor carpi radialis
adduction of wrist when working with flexor carpi ulnaris

59
Q

which nerve supplies extensor digitorum

A

posterior interosseous branch of deep radial

60
Q

what are the actions of extensor digitorum

A

extends wrist and lateral 4 digits
- cannot extend digits individually of each other

61
Q

which nerve supplies extensor digiti minimi

A

posterior interosseous branch of deep radial

62
Q

what is the action of extensor digiti minimi

A

extends wrist and 5th digit

63
Q

which nerve supplies extensor indicis

A

posterior interosseous branch of deep radial

64
Q

what is the action of extensor indicis

A

extends wrist and second digit

65
Q

which nerve supplies extensor pollicis longus

A

posterior interosseous branch of deep radial

66
Q

what is the action of extensor pollicis longus

A

extends wrist and thumb

67
Q

which nerve supplies extensor pollicis brevis

A

posterior interosseous branch of deep radial

68
Q

what is the action of extensor pollicis brevis

A

extends wrist and thumb

69
Q

which nerve supplies abductor pollicis longus

A

posterior interosseous branch of deep radial

70
Q

what is the action of abductor pollicis longus

A

abducts thumb

71
Q

which nerve supplies abductor pollicis brevis

A

recurrent branch of median

72
Q

what is the action of abductor pollicis brevis

A

abduction of thumb

73
Q

which nerve supplies flexor pollicis brevis

A

recurrent branch of median

74
Q

what is the action of flexor pollicis brevis

A

flexion of thumb

75
Q

which nerve supplies opponens pollicis

A

recurrent branch of median

76
Q

what is the action of opponens pollicis

A

rolls thumb over palm of hand

77
Q

which nerves supply the lumbricals

A

radial x2
ulnar x2

78
Q

what is the action of lumbricals

A

normal digital sweep - flexion of MCP and extension of PIPs and DIPs

79
Q

which nerve supplies palmar interosseous

A

ulnar

80
Q

what is the action of palmar interosseous

A

adduction of digits 2-5

81
Q

which nerve supplies adductor pollicis

A

ulnar

82
Q

what is the action of adductor pollicis

A

adduction of thumb

83
Q

which nerve supplies dorsal interosseous

A

ulnar

anatomy y1 (4 decks)

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