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DPT Anatomy Test 3 > Hand and Wrist > Flashcards

Hand and Wrist Flashcards

1
Q

radius and ulna are attached the entire extent of the forearm by way of an ____

A

interosseus membrane

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2
Q

distal radioulnar joint has an articular joint with the ________ rolling on the ulna

A

ulnar notch of the radius

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3
Q

what finder does the longitudinal axis run in the hand

A

through the 2nd finger

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4
Q

Finger rotations is technically _____, a movement that outlines a cone, since the ______ joint only has ____ degrees of freedom

A

circumduction, MCP, 2

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5
Q

O of abductor pollicis brevis

A

flexor retinaculum and tubercles of scaphoid and trapezium bone

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6
Q

I of abductor pollicis brevis

A

lateral side of base of proximal phalanx of thumb

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7
Q

action of abductor pollicis brevis

A

abducts thumb and helps oppose it

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8
Q

innervation of both abductor pollicis brevis and opponens pollicis

A

recurrent branch of median n. (C8-T1)

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9
Q

What is the wrist joint?

A

radiocarpal joint (ulna does not articulate w the carpal bones, but has a fibrocartilaginous disk to the ulna

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10
Q

O of flexor pollicis brevis

A

superficial head - flexor retinaculum and tubercle of trapezium
deep head - floor or carpal tunnel

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11
Q

I of flexor pollicis brevis

A

lateral side of base of proximal phalanx of thumb

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12
Q

Action of flexor pollicis brevis

A

flex thumb

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13
Q

Segments of ALL hand mucscles

A

C8-T1

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14
Q

innervation of flexor pollicis brevis

A

sup. head - recurrent branch of median n. C8-T1

deep head - deep branch of ulnar n. C8-T1

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15
Q

O of opponens pollicis

A

flexor retinaculum and tubercle of trapezium

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16
Q

I of opponens pollicis

A

lateral side of base of proximal phalanx of thumb

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17
Q

A of opponens pollicis

A

opposes thumb toward center of palm and rotates it medially

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18
Q

Innervation of opponens pollicis

A

recurrent branch of median n. C8-T1

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19
Q

O of adductor pollicis

A

oblique head - bases of metacarpal 2-3, capitate and adjacent carpal bones
transverse head - anterior surface of 3rd metacarpal

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20
Q

I of adductor pollicis

A

medial side of base of proximal phalanx of thumb

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21
Q

action of adductor pollicis

A

adducts thumb toward middle digit

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22
Q

innervation of adductor pollicis

A

deep branch of ulnar n. C8-T1

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23
Q

O of abductor digiti minimi

A

pisiform bone

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24
Q

i of abductor digiti minimi

A

medial side of base of proximal phalanx of digit 5

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25
Q

action of abductor digiti minimi

A

abducts digit 5

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26
Q

innervation of abductor digiti minimi

A

deep branch of ulnar n. C8-T1

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27
Q

O of flexor digiti minimi brevis

A

hook of hamate bone and flexor retinaculum

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28
Q

i of flexor digiti minimi brevis

A

medial side of base of proxmial phalanx of digit 5

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29
Q

action of flexor digiti minimi brevis

A

flexes proximal phalanx of digit 5

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30
Q

innervation of all digiti minimi muscles

A

deep branch of ulnar n. C8T1

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31
Q

O of opponens digiti minimi

A

hook of hamate bone and flexor retinaculum

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32
Q

i of opponens digiti minimi

A

medial border of 5th metacarpal

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33
Q

action of opponens digiti minimi

A

draws 5th metacarpal bone anteriorly and rotates it bringing digit 5 into opposition to thumb

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34
Q

innervation of opponens digiti minimi

A

deep branch of ulnar n. C8T1

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35
Q

O of lumbricals 1 and 2

A

lateral two tendons of flexor digitorum profundus (index and middle finger)

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36
Q

I of lumbricals 1 and 2

A

Lateral sides of extensor expansions of digits 2 and 3

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37
Q

Action of lumbricals 1 and 2

A

flex digits at metacarpophalangeal joint and extend interphalangeal joints

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38
Q

innervation of lumbricals 1 & 2

A

median n. C8-T1

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39
Q

O of lumbricals 3 and 4

A

medial two tendons of flexor digitorum profundus (ring and little finger)

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40
Q

I of lumbricals 3 and 4

A

lateral sides of extensor expansions of digits 4 and 5

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41
Q

action of lumbricals 3-4

A

flex digits at metacarpophalangeal joint and extend interphalangeal joints

42
Q

innervation of lumbricals 3 and 4

A

deep branch of ulnar n. C8T1

43
Q

o of dorsal interosseus 1-4

A

adjacent sides of two metacarpal bones

44
Q

i of dorsal interosseus 1-4

A

extensor expansions and bases of proximal phalanges of digits 2-4
middle finger has two insertions

45
Q

action of dorsal interosseus 1-4

A

abducts digits and assist lumbricals in extension at the IP joints

46
Q

innervation of dorsal interosseus 1-4

A

deep branch of ulnar n. C8-T1

47
Q

O of palmar interosseus 1-3

A

palmar surfaces of 2nd, 4th and 5th metacarpal bones

48
Q

I of palmar interosseus 1-3

A

extensor expansions and bases of proximal phalanges of digits 2,4,5

49
Q

action of palmar interosseus

A

adducts digits and assist lumbricals in flexion at the mcp joints

50
Q

innervation of palmar interosseus 1-3

A

deep branch of ulnar n. C8-T1

51
Q

flexor retinaculum is on the _____ side of the forearme

A

anterior

52
Q

extensor retinaculum is on the _____ side of the forearm

A

posterior

53
Q

The flexor retinaculum closes off the carpal groove (sulcus) for the formation of the __________

A

carpal tunnel

54
Q

The deep fascia of the palm is thickened along __________

A

the middle of the palm as the palmar aponeurosis

55
Q

What mark the lateral and medial boundaries of the central compartment?

A

lateral and medial septa

56
Q

This compartment is the palmar extension of the carpal tunnel and carries the tendons of the superficial and deep digital flexor muscles.

A

central

57
Q

The wrist is made up of which joints

A

radiocarpal, distal radial ulnar

58
Q

does not atrticulate with the carpals, but is attached via fibrocartilaginous disc

A

ulna

59
Q

which carpal articulates via the fibrocartilaginous disc

A

triquetrum

60
Q

the distal radioulnar joint has an articulation with the _____ of the radius rolling on the ulna

A

ulnar notch

61
Q

What ligaments are involved in the radiocarpal joints and the MCP, PIP, DIP

A

radial and ulnar collateral ligaments

62
Q

What actions occur at the CMC jt of the thumb

A

ext,flex, abd,add, opp

63
Q

which retinaculum closes off the carpal groove for the formation of the carpal tunnel

A

flexor

64
Q

what is the flexor retinaculum a continuum of

A

antebrachial fascia

65
Q

what is the transverse carpal ligament attached to?

A

radially-tubercles of scaphoid and trapezium

ulnar - pisiform and hook of hamate

66
Q

the cephalic vein enters which side of the wrist

A

lateral

67
Q

What creases mark the levels of the MCP PIP DIP

A

proximal digital crease
middle ‘’ ‘’
distal ‘’ ‘’

68
Q

What two nerves control the short muscles of the hand

A

ulnar and median

69
Q

which nerve is entirely sensory over the dorsolateral part of the hand and thumb

A

radial

70
Q

what are the motor innervations for the median n? sensory?

A

lumbricals 1and2
radial half of palm & dorsal surface of thumb to lateral 2.5 digits & the distal end of dorsal side of digits 2 to half of 4

71
Q

What 3 muscles travel w/ median n. through carpal tunnel

A

FDS FDP FPL

72
Q

Where does the recurrent branch of the median n. branch and what does it innervate?

A

just distal to the flexor retinaculum

thenar eminence muscles ( except adductor pollicis)

73
Q

Which nerve is responsible for fine movement of the hand

A

ulnar

74
Q

what 3 branches are a part of the sensory branch of the ulnar n

A

superficial branch
dorsal cutaneus branch
palmar branch

75
Q

what does the superficial branch of the ulnar n innervate

A

ulnar palmar 1.5 digits

76
Q

what does the dorsal cutaneus branch of the ulnar nerve innervate

A

ulnar dorsal 1.5 digits

77
Q

what does the palmar branch of the ulnar n innervate

A

medial half of palm

78
Q

Which branch innervates the hypothenar mm., lumbricals 3,4, adductor pollicis, and all the dorsal and palmar interosseus (fine motor control)

A

deep branch of ulnar (C8-T1)

79
Q

What nerve innervates the distal ends of the fingers

A

median 2-1/2 of 4

ulnar 5-1/2 of 4

80
Q

does radial nerve have any motor control of the hand

A

no, but can control hand movement due to the innervation of the extensor comp

81
Q

the superficial branch of the radial n is _____ and covers _____________

A

sensory

radial 1/2 of dorsum of hand & thumb. extending only to proximal half of digits 2-4

82
Q

radial artery is located

A

anterior and lateral part of forearm

83
Q

what branch of the radial a comes off befor it enters the extensor compartement through the anatomical snuff box?
what does it anastomose with

A

superficial palmar branch

superficial palmar arterial arch of ulnar a

84
Q

the radial artery continues around the dorsal side of the thumb through the snuff box to enter the palm as what? what will it anastomose with

A

deep palmar arterial arch, ulnar artery

85
Q

what branches come off the deep palmar arterial arches

A

princeps pollicis a, radialis indicis a, digital a

86
Q

the ulnar artery travels through the pisiform and hook of hamate and braches into the superficial and deep branch, what does each anastomose with

A

superficial-superficial palmar a

deep-deep palmar a of radius

87
Q

what forms the superficial palmar arterial arch

A

superficial branch of ulnar a (located mid metacarpal)

88
Q

T/F suprficial palmar arterial arch is deep to palmar aponeurosis

A

T

89
Q

What forms the deep palmar arterial a

A

deep branch of radial a ( located near proximal ends of metacarpals)

90
Q

With carpal tunnel syndrom, the swelling decreases the space in the carpal tunnel and increases the pressure on which n and which tendons

A

median n.

forearm flexors

91
Q

carpal tunnel sensory limitations, motor?

A

pain, anesthesia over median n sensory map of hand

weakness/atrophy of the thenar muscles

92
Q

what 2 muscles might also be weak due to pressure on the synovial sheaths

A

FDS, FDP

93
Q

Ulnar n damage

A

sensory - ulnar n sensory map of hand

motor - fine motor control (lumbricals 34 and interossei)

94
Q

ulnar n damage. how will it affect the thumb

A

weak adduction

95
Q

wrist drop sign of damage to what n

A

radial

96
Q

where can damage to radial n occur

A

as high as the post humerus, lateral epi

97
Q

what muscles will be affected if radial n is damaged, actions?

A

ED,ECU,ECRL,ECRB

wrist ext, finger ext, thumb ext and abd

98
Q

4 muslces of thenar eminence

A

abductor pollicis brevis
flexor pollicis brevis
obterator pollicis
adductor pollicis

99
Q

what are the 3 muscles of the hypothenar eminence

A

abductor digiti minimi
flexor digit minimi brevis
opponens digiti mini

100
Q

flex digits at CMP and ext IP

A

lumbricals

101
Q

which short muscles of the hand abduct digits. add?

A

dorsal interosseus DAB

palmar interosseus PAD

102
Q

what are the only short muscles of the hand not innervated by the deep branch of the ulnar n.

A

lumbricals 1.2

DPT Anatomy Test 3 (4 decks)

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