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PHTH 510 > Muscles of the Hand > Flashcards

Muscles of the Hand Flashcards

1
Q

what are the intrinsic muscles of the hand that are innervated by the ulnar nerve

A

palmaris brevis, dorsal and palmar interossei, adductor pollicis, hypothenar muscles, lumbricals (4-5)

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2
Q

what are the hypothenar muscles of the hand

A

opponens digiti minimi, abd digiti minimi, flex digiti minimi brevis

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3
Q

what intrisic hand muscles does the median nerve innervate

A

the thenar muscles, the 1st and 2nd lumbricals, and abductor pollicis brevis

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4
Q

what are the thenar muscles of the hand

A

flexor pollicis brev and the opponens pollicis

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5
Q

what is the origin of palmaris brevis

A

flexor retinaculum

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6
Q

what is the insertion of the palmaris brevis

A

dermis on the ulnar border

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7
Q

what is the action of palmaris brevis

A

wrinkle the skin of the palm

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8
Q

what is the origin of adductor pollicis

A

2nd and 3rd metacarpal

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9
Q

where does adductor pollicis insert

A

the proximal 1st phalange, the thumb!

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10
Q

what is the origin of the 1st and 2nd lumbricals

A

lateral tendons of flexor digitorum profundus

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11
Q

what is the origin of the 2nd and 3rd lumbricals

A

the medial tendons of flexor digitorum profundus

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12
Q

what is the innervation of the 1st and 2nd lumbrical

A

median nerve

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13
Q

what is the innervation of the 3rd and 4th lumbrical

A

ulnar nerve

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14
Q

what is the insertion of the dorsal interossei

A

the dorsal digital expansion of phalanges 2-4

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15
Q

which finger does not have a palmar interosseus muscles?

A

the 3rd finger (middle finger)

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16
Q

what is the insertion of palmar interossei?

A

the dorsal digital expansions of digits 2,4,5

17
Q

what is the origin of opponens pollicis

A

trapezium and flexor retinaculum

18
Q

what is the origin of abductor pollicis brev

A

the scaphoid, trapezium, and flexor retinaculum

19
Q

what is the origin of opponens digiti minimi

A

hook of hamate and flexor retinaculum

20
Q

what is the origin of abductor digiti minimi

A

pisiform and flexor carpi ulnaris

21
Q

what is the origin of flexor digiti minimi brevis

A

hook of hamate and flexor retinaculum

PHTH 510 (7 decks)

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