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Unit 2 Upper Limb > Hand > Flashcards

Hand Flashcards

1
Q

origin of abductor pollicis brevis

A

scaphoid and trapezium; flexor retinaculum

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2
Q

insertion of abductor pollicis brevis

A

base of the proximal phalanx of the thumb (via the radial sesamoid)

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3
Q

innervation of abductor pollicis brevis

A

median n. (C8,T1)

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4
Q

action of abductor pollicis brevis

A

abducts the CMC joint of thumb

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5
Q

origin of flexor pollicis brevis

A

superficial head: flexor retinaculum

deep head: capitate, trapezium

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6
Q

insertion of flexor pollicis brevis

A

base of the proximal phalanx of the thumb (via the radial sesamoid)

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7
Q

innervation of flexor pollicis brevis

A

superficial head: median n. (C8,T1)

deep head: ulnar n. (C8,T1)

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8
Q

action of flexor pollicis brevis

A

flexes the CMC joint of thumb

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9
Q

origin of opponens pollicis

A

trapezium

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10
Q

insertion of opponens pollicis

A

radial border of the first metacarpal

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11
Q

innervationof opponens pollicis

A

median

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12
Q

action of opponens pollicis

A

opposition of CMC joint of thumb

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13
Q

origin of abductor digiti minimi

A

pisiform bone

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14
Q

insertion of abductor digiti minimi

A

ulnar base of the 5th proximal phalanx, and dorsal digital expansion of 5th digit

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15
Q

innervation of abductor digiti minimi

A

deep ulnar n. (C8,T1)

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16
Q

action of abductor digiti minimi

A

MCP joint: flexion and abduction of little finger

PIP and DIP joints: extension

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17
Q

origin of flexor digiti minimi brevis

A

hook of hamate, flexor retinaculum

18
Q

insertion of flexor digiti minimi brevis

A

base of the 5th proximal phalanx

19
Q

innervation of flexor digiti minimi brevis

A

deep ulnar n. (C8,T1)

20
Q

action of flexor digiti minimi brevis

A

flexion of MCP joint of little finger

21
Q

insertion of opponens digiti minimi

A

ulnar border of 5th metacarpal

22
Q

innervation of opponens digiti minimi

A

deep ulnar n. (C8,T1)

23
Q

action of opponens digiti minimi

A

draws metacarpal in palmar direction (opposition)

24
Q

origin of opponens digiti minimi

A

hook of hamate, flexor retinaculum

25
Q

origin of lumbricals

A

1st and 2nd muscles: radial sides of the tendons of flexor digitorum profundus

3rd and 4th muscles: bipennate from medial and lateral sides of the tendons of flexor digitorum profundus

26
Q

insertion of lumbricals

A

1st muscles inserts on the 2nd digit dde (dorsal digital expansion)
2nd muscle on 3rd digit dde
3rd muscle on 4th digit dde
4th muscle on 5th digit dde

27
Q

innervation of lumbricals

A

1st and 2nd muscles: median n.

3rd and 4th muscles: ulnar n.

28
Q

action of lumbricals

A

2nd to 5th digits:
MCP joints: flexion
PIP and DIP joints: extension

29
Q

origin of dorsal interossei

A

1st muscles originates on the 1st and 2nd metacarpals (adjacent sides, two heads)
2nd muscle on 2nd & 3rd metacarpals
3rd muscle on 3rd & 4th metacarpals
4th muscle on 4th & 5th metacarpals

30
Q

insertion of dorsal interossei

A

1st muscles inserts on the 2nd digit dde (dorsal digital expansion); radial side of 2nd proximal phalanx
2nd muscle on 3rd digit dde; radial side of 3rd proximal phalanx
3rd muscle on 3rd digit dd; ulnar side of 3rd proximal phalanx
4th muscle on 4th digit dde; ulnar side of 4th proximal phalanx

31
Q

innervation of dorsal interossei

A

deep ulnar n. (C8,T1)

32
Q

action of dorsal interossei

A

2nd to 4th digits:
MCP joints: flexion
PIP and DIP joints: extension and abduction from 3rd digit

33
Q

origin of 1st palmar interossei

A

2nd metacarpal (ulnar side)

34
Q

origin of 2nd palmar interossei

A

4th metacarpal (radial side)

35
Q

origin of 3rd palmar interossei

A

5th metacarpal (radial side)

36
Q

insertion of 1st palmar interossei

A

base of 2nd proximal phalanx

37
Q

insertion of 2nd palmar interossei

A

base of 4th proximal phalanx

38
Q

insertion of 3rd palmar interossei

A

base of 5th proximal phalanx

39
Q

innervation of palmar interossei

A

deep ulnar n.

40
Q

action of palmar interossei

A

2nd,4th,5th digits:
MCP joints: flexion
PIP and DIP joints: extension and adduction toward 3rd digit

Unit 2 Upper Limb (6 decks)

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