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Functional Anatomy > Wrist and Hand > Flashcards

Wrist and Hand Flashcards

1
Q

this is often compressed with ulnar deviation (often injured with repetitive movement - hammering)

A

triangular fibrocartilagenous complex

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2
Q

___ most commonly broken in wrist

A

scaphoid

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3
Q

__ most frequently dislocated bone in wrist

A

the lunate

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4
Q

maximum wrist extension occurs when…

A

fingers are flexed

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5
Q

max wrist flexion occurs when..

A

fist is open

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6
Q

O/I/N Flexor carpi radialis

A

O - medial epicondyle of humerus
I - base of 2/3 metacarpal bone
N - median n

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7
Q

Action of flexor carpi radials

A
  • wrist flexion

- wrist radial deviation

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8
Q

O/I/ of the flexor carpi ulnaris

A

o - HH - medial condyle of humerus
UH - olecranon and posterior border of ulna
I - pisiform bone, hook of hamate bone, 5th metacarpal

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9
Q

nerve/action of flexor carpi ulnaris

A

N - ulnar

A - flexion/ulnar deviation

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10
Q

palmaris longus O/I

A

O - medial condyle of humerus

I - distal half of flexor retinaculum and palmar aponeurosis

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11
Q

action/nerve of palmaris longus

A

N- median

A - flexion of wrist, tightens palmar aponeurosis

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12
Q

extensor Carpi radialis longus O/I/N

A

O - lateral supracondyler ridge of humerus
I - base of 2nd metacarpal
N - radila nerve

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13
Q

Action of extensor Carpi radialis longus

A

extension, radial deviation

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14
Q

Extensor Carpi Radialis Brevis O/I/N

A

o - lateral epicondyle
I - base of 3rd metacarpal
N - radial

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15
Q

Action of Extensor Carpi Radialis Brevis

A

extension and radial deviation

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16
Q

N/A Extensor Carpi Ulnaris

A

N - radial

A - ulnar deviation

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17
Q

metacarpal are __ to proximal flanges ___

A

Male to female

18
Q

O/I of extensor digitorum

A

O - lateral condyle of hummus

I - digits 2-5 and base of middle phalanx

19
Q

Action and Nerve of extensor digitorum

A

N -Radial N (deep)
A - extend digits 2-5
- wrist extension while fingers are extended

20
Q

Abductor Pollicis Longus, Extensor Pollicis Longus, extensor Pollicis Brevis all have this in common

A

extend at CMC joint

21
Q

Extensor Digiti Minimi, Extensor Pollicis Longus, Extensor Indicis all have this in common

A

extend MCP and IP joints

22
Q

A/N of the flexor digitorum superficialis

A

N - median nerve

A - flex wrist, MCP, PIP

23
Q

A/N of Flexor Digitorum Profundus

A

N - median (radial side), Ulnar (ulnar side)

A - flex wrist, MCP, PIP, DIP

24
Q

A/N of Flexor Pollicis Longus

A

N - median nerve
A - flexes thumb at CMC, MCP & IP
flex wrist

25
Q

what is the role of the wrist EXTENSORS in grasping

A

prevent wrist flexion via stabilization

26
Q

what is the role of the wrist FLEXORS in extension of fingers

A
  • prevent extension in fingers when fingers are extended
27
Q

A/N of four lumbricals

A

A - Flex MCP digits II-V Extend IP digits II-V

N - 1/2 median - 3/4 ulnar

28
Q

Three Palmar Interossei A/N

A

A - Adduct digits II, IV and V at MCP joints toward Digit III
N - ulnar n

29
Q

A/N/ ROI of Four Dorsal Interossei

A

A - Abduct digits II-IV at MCP joints
ROI - Adducts thumb at CMC
N - ulnar

30
Q

what does the Thenar Group consist of.. and N

A

Adductor Pollicis (Ulnar n) Abductor Pollicis Brevis
(Median n)
Opponens Pollicis (Median and Ulnar n)
Flexor Pollicis Brevis, (Median and Ulnar n)

31
Q

Action of Opponens Pollicis

A

opposition of the thumb at the CMC

32
Q

action of Abductor Pollicis brevis

A

Abducts thumb at CMC jt.

33
Q

Action of Flexor Pollicus Brevis

A

Flexes thumb and

CMC and MCP

34
Q

Action of Adductor Pollicis

A

Adducts the thumb at CMC jt

35
Q

what makes up Hypothenar group and which nerve innervates this group

A

Abductor Digiti Minimi Flexor Digiti Minimi Opponens Digit Minimi
N - ulnar

36
Q

Action of Flexor Digiti Minimi

A

flexes 5th MCP joint

37
Q

Action of Abductor digits minimi

A

Abduct 5th digit at MCP joint (CMC joint)

38
Q

Action of Opponens Digiti Minimi

A

Opposes little finger at CMC jt

39
Q

intrinsic m of the thumb

A

Abductor Pollicis Brevis Adductor Pollicis

First Dorsal Interosseous Flexor Pollicis Brevis Opponens Pollicis

40
Q

Extrinsic muscles of the thumb

A

Abductor Pollicis Longus Extensor Pollicis Brevis Extensor Pollicis Longus Flexor Pollicis Longus

Functional Anatomy (7 decks)

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