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MGA > Muscles of the Hands > Flashcards

Muscles of the Hands Flashcards

1
Q

origin of palmaris brevis

A

palmar aponeurosis

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2
Q

insertion palmaris brevis

A

skin on medial palmar surface

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3
Q

innervation palmaris brevis

A

superficial branch of ulnar nerve

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4
Q

blood supply palmaris brevis

A

superficial palmar arch

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5
Q

action of palmaris brevis

A

crinkles skin of hypothenar eminence, may improve grip

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6
Q

origin abductor pollicis brevis

A

flexor retinaculum, trapezium, scaphoid

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7
Q

insertion abductor pollicis brevis

A

proximal phalanx of pollex

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8
Q

innervation abductor pollicis brevis

A

recurrent branch of median nerve

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9
Q

blood supply abductor pollicis brevis

A

superficial palmar branch of radial artery

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10
Q

action of abductor pollicis brevis

A

abducts pollex

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11
Q

what are the thenar group

A

abductor pollicis brevis, flexor pollicis brevis, opponens pollicis

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12
Q

what innervates all thenar group muscles

A

the recurrent branch of median nerve

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13
Q

origin flexor pollicis brevis

A

flexor retinaculum, trapezium, scaphoid

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14
Q

insertion flexor pollicis brevis

A

proximal phalanx of pollex

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15
Q

innervation flexor pollicis brevis

A

recurrent branch of median nerve

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16
Q

blood supply flexor pollicis brevis

A

superficial palmar branch of radial artery

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17
Q

action of flexor pollicis brevis

A

flexes pollex

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18
Q

origin of opponens pollicis

A

flexor retinaculum, trapezium, scaphoid

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19
Q

insertion opponens pollicis

A

1st metacarpal

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20
Q

innervation opponens pollicis

A

recurrent branch of median nerve

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21
Q

blood supply opponens pollicis

A

superficial palmar branch of radial artery

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22
Q

hypothenar group

A

abductor digiti minimi, flexor digiti minimi brevis, opponens digiti minimi

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23
Q

origin abductor digiti minimi

A

pisiform

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24
Q

insertion abductor digiti minimi

A

proximal phalanx of digit 5

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25
Q

innervation abductor digiti minimi

A

deep branch ulnar nerve

26
Q

blood supply abductor digiti minimi

A

deep palmar arch of ulnar artery

27
Q

action abductor digiti minimi

A

abducts digit 5

28
Q

origin flexor digiti minimi brevis

A

hook of hamate, flexor retinaculum

29
Q

insertion flexor digiti minimi brevis

A

proximal phalanx digit 5

30
Q

innervation flexor digiti minimi brevis

A

deep branch ulnar nerve

31
Q

blood supply flexor digiti minimi brevis

A

deep palmar arch of ulnar artery

32
Q

action flexor digiti minimi

A

flexes digit 5

33
Q

origin opponens digiti minimi

A

hook of hamate, flexor retinaculum

34
Q

insertion opponens digiti minimi

A

metacarpal 5

35
Q

innervation opponens digiti minimi

A

deep branch ulnar nerve

36
Q

blood supply opponens digiti minimi

A

deep palmar arch of ulnar artery

37
Q

action opponens digiti minimi

A

opposes 5th digit

38
Q

what innervates all 3 hypothenar muscles?

A

deep branch ulnar nerve

39
Q

what supplies blood to all 3 hypothenar muscles

A

deep palmar arch of ulnar artery

40
Q

what supplies blood to all 3 thenar muscles

A

superficial palmar branch of radial artery

41
Q

origin of lumbricals

A

tendons of flexor digitorum profundus

42
Q

insertion of lumbricals

A

extensor hoods of digits 2-5

43
Q

innervation of lumbricals

A

LATERAL 2 LUMBRICALS - median nerve MEDIAL 2 LUMBRICALS - deep branch of ulnar nerve

44
Q

blood supply lumbricals

A

superficial and deep palmar arches

45
Q

action lumbricals

A

flexes MCP, extends PIP/DIP joints

46
Q

origin adductor pollicis

A

transverse head: metacarpal 3 oblique head: capitate, metacarpals 2+3

47
Q

insertion adductor pollicis

A

proximal phalanx of pollex

48
Q

innervation adductor pollicis

A

deep branch ulnar nerve

49
Q

blood supply adductor pollicis

A

deep palmar arch

50
Q

action adductor pollicis

A

adducts pollex

51
Q

what shape are the palmar interossei?

A

unipennate

52
Q

what shape are dorsal interossei?

A

bipennate

53
Q

origin palmar interossei?

A

there are 3 muscles, metacarpals 2,4,5

54
Q

insertion palmart interossei

A

extensor hoods

55
Q

innervation palmar interossei

A

deep branch ulnar nerve

56
Q

blood supply palmar interossei

A

deep palmar arch

57
Q

action palmar interossei

A

PAD - adduction of digits 2,4,5

58
Q

origin dorsal interossei

A

there are 4 muscles, metacarpals 1,2,3,4,5

59
Q

insertion dorsal interossei

A

extensor hoods

60
Q

innervation dorsal interossei

A

deep branch ulnar nerve

61
Q

blood supply dorsal interossei

A

deep palmar arch

62
Q

action dorsal interossei

A

DAB - abduction of digits 2,3,4 ** doesnt need 1st or 5th due to the abductor digiti minimi and abductor pollicis brevis/longus

MGA (27 decks)

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