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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
innervation abductor digiti minimi
deep branch ulnar nerve
26
blood supply abductor digiti minimi
deep palmar arch of ulnar artery
27
action abductor digiti minimi
abducts digit 5
28
origin flexor digiti minimi brevis
hook of hamate, flexor retinaculum
29
insertion flexor digiti minimi brevis
proximal phalanx digit 5
30
innervation flexor digiti minimi brevis
deep branch ulnar nerve
31
blood supply flexor digiti minimi brevis
deep palmar arch of ulnar artery
32
action flexor digiti minimi
flexes digit 5
33
origin opponens digiti minimi
hook of hamate, flexor retinaculum
34
insertion opponens digiti minimi
metacarpal 5
35
innervation opponens digiti minimi
deep branch ulnar nerve
36
blood supply opponens digiti minimi
deep palmar arch of ulnar artery
37
action opponens digiti minimi
opposes 5th digit
38
what innervates all 3 hypothenar muscles?
deep branch ulnar nerve
39
what supplies blood to all 3 hypothenar muscles
deep palmar arch of ulnar artery
40
what supplies blood to all 3 thenar muscles
superficial palmar branch of radial artery
41
origin of lumbricals
tendons of flexor digitorum profundus
42
insertion of lumbricals
extensor hoods of digits 2-5
43
innervation of lumbricals
LATERAL 2 LUMBRICALS - median nerve MEDIAL 2 LUMBRICALS - deep branch of ulnar nerve
44
blood supply lumbricals
superficial and deep palmar arches
45
action lumbricals
flexes MCP, extends PIP/DIP joints
46
origin adductor pollicis
transverse head: metacarpal 3 oblique head: capitate, metacarpals 2+3
47
insertion adductor pollicis
proximal phalanx of pollex
48
innervation adductor pollicis
deep branch ulnar nerve
49
blood supply adductor pollicis
deep palmar arch
50
action adductor pollicis
adducts pollex
51
what shape are the palmar interossei?
unipennate
52
what shape are dorsal interossei?
bipennate
53
origin palmar interossei?
there are 3 muscles, metacarpals 2,4,5
54
insertion palmart interossei
extensor hoods
55
innervation palmar interossei
deep branch ulnar nerve
56
blood supply palmar interossei
deep palmar arch
57
action palmar interossei
PAD - adduction of digits 2,4,5
58
origin dorsal interossei
there are 4 muscles, metacarpals 1,2,3,4,5
59
insertion dorsal interossei
extensor hoods
60
innervation dorsal interossei
deep branch ulnar nerve
61
blood supply dorsal interossei
deep palmar arch
62
action dorsal interossei
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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