wrist and hand Flashcards

1
Q

bones of the wrist from thumb to pinky proximal then distal

A

scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate

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2
Q

thenar group muscles

A

flexor policis brevis, opponents policis, abductor policis brevis, adductor policis

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3
Q

hypothenar group muscles

A

flexor digiti minimi, opponents digiti minimi, abductor digiti minimi

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4
Q

central group palmar muscles

A

lumbricals, palmar interossei, dorsal interossei

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5
Q

proximal attachment flexor policis brevis, abductor policis brevis, opponens policis

A

flexor retinaculum, scaphoid, trapezius

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6
Q

distal attachment flexor policis brevis, abductor policis brevis

A

1st proximal phalanx

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7
Q

flexor policis brevis inn.

A

median n., recurrent branch

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8
Q

action of flexor policis brevis

A

flex thumb at CM and MCP joints

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9
Q

abductor policis brevis, opponens policis, flexor policis brevis inn.

A

median n., recurrent branch

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10
Q

abductor policis brevis action

A

abduct thumb at CM joint

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11
Q

distal attachment opponens policis

A

1st metacarpal

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12
Q

action of opponens policis

A

oppose thumb at CM joint

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13
Q

proximal attachment adductor policis

A

oblique- capitate, 2nd and 3rd metacarpal
transverse- 3rd metacarpal

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14
Q

distal attachment adductor policis

A

1st proximal phalanx

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15
Q

inn. adductor policis

A

ulnar n., deep branch

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16
Q

action of adductor policis

A

adducts thumb at CM, MCP, and IP joints

17
Q

proximal attachment abductor digiti minimi

A

pisiform

18
Q

proximal attachment flexor digit minimi, opponens digiti minimi

A

hook of hamate and flexor retinaculum

19
Q

distal attachment abductor digiti minimi, flexor digiti minimi, opponens digiti minimi

A

5th proximal phalanx

20
Q

inn. abductor digiti minimi, flexor digiti minimi, opponens digiti minimi

A

ulnar n., deep branch

21
Q

action abductor digiti minimi

A

abduct and flex digit 5 at MCP joint

22
Q

flexor digiti minimi

A

flex digit 5 at CM and MCP joints

23
Q

action of opponens digiti minimi

A

oppose digit 5 at CM joint

24
Q

proximal attachment lumbricals (1-4)

A

flexor digitorum profundus tendons

25
Q

proximal attachment palmar interossei

A

sides of metacarpals 2, 4, and 5 (NOT 3 or 1)

26
Q

proximal attachment dorsal interossei (1-4)

A

adjacent sides of metacarpals

27
Q

distal attachment lumbricals

A

via extensor expansions on 2nd to 5th proximal phalanges

28
Q

distal attachment palmar interossei

A

2nd, 4th, 5th proximal phalanges

29
Q

distal attachment dorsal interossei

A

2nd-4th proximal phalanges

30
Q

lumbricals inn.

A

median (1 and 2) and ulnar n. deep branch (3 and 4)

31
Q

palmar interossei and dorsal interossei inn.

A

ulnar n., deep branch

32
Q

action of lumbricals

A

extend fingers at PIPs and DIPs, flex finger at MCP joint

33
Q

action of palmar interossei

A

adduct digits 2, 4, 5, aid lumbricals

34
Q

action of dorsal interossei

A

abduct digits 2-4, aids lumbricals