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DPT Anatomy Test 3 > Hand and Wrist > Flashcards

Hand and Wrist Flashcards

(102 cards)

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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
action of abductor digiti minimi
abducts digit 5
26
innervation of abductor digiti minimi
deep branch of ulnar n. C8-T1
27
O of flexor digiti minimi brevis
hook of hamate bone and flexor retinaculum
28
i of flexor digiti minimi brevis
medial side of base of proxmial phalanx of digit 5
29
action of flexor digiti minimi brevis
flexes proximal phalanx of digit 5
30
innervation of all digiti minimi muscles
deep branch of ulnar n. C8T1
31
O of opponens digiti minimi
hook of hamate bone and flexor retinaculum
32
i of opponens digiti minimi
medial border of 5th metacarpal
33
action of opponens digiti minimi
draws 5th metacarpal bone anteriorly and rotates it bringing digit 5 into opposition to thumb
34
innervation of opponens digiti minimi
deep branch of ulnar n. C8T1
35
O of lumbricals 1 and 2
lateral two tendons of flexor digitorum profundus (index and middle finger)
36
I of lumbricals 1 and 2
Lateral sides of extensor expansions of digits 2 and 3
37
Action of lumbricals 1 and 2
flex digits at metacarpophalangeal joint and extend interphalangeal joints
38
innervation of lumbricals 1 & 2
median n. C8-T1
39
O of lumbricals 3 and 4
medial two tendons of flexor digitorum profundus (ring and little finger)
40
I of lumbricals 3 and 4
lateral sides of extensor expansions of digits 4 and 5
41
action of lumbricals 3-4
flex digits at metacarpophalangeal joint and extend interphalangeal joints
42
innervation of lumbricals 3 and 4
deep branch of ulnar n. C8T1
43
o of dorsal interosseus 1-4
adjacent sides of two metacarpal bones
44
i of dorsal interosseus 1-4
extensor expansions and bases of proximal phalanges of digits 2-4 middle finger has two insertions
45
action of dorsal interosseus 1-4
abducts digits and assist lumbricals in extension at the IP joints
46
innervation of dorsal interosseus 1-4
deep branch of ulnar n. C8-T1
47
O of palmar interosseus 1-3
palmar surfaces of 2nd, 4th and 5th metacarpal bones
48
I of palmar interosseus 1-3
extensor expansions and bases of proximal phalanges of digits 2,4,5
49
action of palmar interosseus
adducts digits and assist lumbricals in flexion at the mcp joints
50
innervation of palmar interosseus 1-3
deep branch of ulnar n. C8-T1
51
flexor retinaculum is on the _____ side of the forearme
anterior
52
extensor retinaculum is on the _____ side of the forearm
posterior
53
The flexor retinaculum closes off the carpal groove (sulcus) for the formation of the __________
carpal tunnel
54
The deep fascia of the palm is thickened along __________
the middle of the palm as the palmar aponeurosis
55
What mark the lateral and medial boundaries of the central compartment?
lateral and medial septa
56
This compartment is the palmar extension of the carpal tunnel and carries the tendons of the superficial and deep digital flexor muscles.
central
57
The wrist is made up of which joints
radiocarpal, distal radial ulnar
58
does not atrticulate with the carpals, but is attached via fibrocartilaginous disc
ulna
59
which carpal articulates via the fibrocartilaginous disc
triquetrum
60
the distal radioulnar joint has an articulation with the _____ of the radius rolling on the ulna
ulnar notch
61
What ligaments are involved in the radiocarpal joints and the MCP, PIP, DIP
radial and ulnar collateral ligaments
62
What actions occur at the CMC jt of the thumb
ext,flex, abd,add, opp
63
which retinaculum closes off the carpal groove for the formation of the carpal tunnel
flexor
64
what is the flexor retinaculum a continuum of
antebrachial fascia
65
what is the transverse carpal ligament attached to?
radially-tubercles of scaphoid and trapezium | ulnar - pisiform and hook of hamate
66
the cephalic vein enters which side of the wrist
lateral
67
What creases mark the levels of the MCP PIP DIP
proximal digital crease middle '' '' distal '' ''
68
What two nerves control the short muscles of the hand
ulnar and median
69
which nerve is entirely sensory over the dorsolateral part of the hand and thumb
radial
70
what are the motor innervations for the median n? sensory?
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
What 3 muscles travel w/ median n. through carpal tunnel
FDS FDP FPL
72
Where does the recurrent branch of the median n. branch and what does it innervate?
just distal to the flexor retinaculum | thenar eminence muscles ( except adductor pollicis)
73
Which nerve is responsible for fine movement of the hand
ulnar
74
what 3 branches are a part of the sensory branch of the ulnar n
superficial branch dorsal cutaneus branch palmar branch
75
what does the superficial branch of the ulnar n innervate
ulnar palmar 1.5 digits
76
what does the dorsal cutaneus branch of the ulnar nerve innervate
ulnar dorsal 1.5 digits
77
what does the palmar branch of the ulnar n innervate
medial half of palm
78
Which branch innervates the hypothenar mm., lumbricals 3,4, adductor pollicis, and all the dorsal and palmar interosseus (fine motor control)
deep branch of ulnar (C8-T1)
79
What nerve innervates the distal ends of the fingers
median 2-1/2 of 4 | ulnar 5-1/2 of 4
80
does radial nerve have any motor control of the hand
no, but can control hand movement due to the innervation of the extensor comp
81
the superficial branch of the radial n is _____ and covers _____________
sensory | radial 1/2 of dorsum of hand & thumb. extending only to proximal half of digits 2-4
82
radial artery is located
anterior and lateral part of forearm
83
what branch of the radial a comes off befor it enters the extensor compartement through the anatomical snuff box? what does it anastomose with
superficial palmar branch | superficial palmar arterial arch of ulnar a
84
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
deep palmar arterial arch, ulnar artery
85
what branches come off the deep palmar arterial arches
princeps pollicis a, radialis indicis a, digital a
86
the ulnar artery travels through the pisiform and hook of hamate and braches into the superficial and deep branch, what does each anastomose with
superficial-superficial palmar a | deep-deep palmar a of radius
87
what forms the superficial palmar arterial arch
superficial branch of ulnar a (located mid metacarpal)
88
T/F suprficial palmar arterial arch is deep to palmar aponeurosis
T
89
What forms the deep palmar arterial a
deep branch of radial a ( located near proximal ends of metacarpals)
90
With carpal tunnel syndrom, the swelling decreases the space in the carpal tunnel and increases the pressure on which n and which tendons
median n. | forearm flexors
91
carpal tunnel sensory limitations, motor?
pain, anesthesia over median n sensory map of hand | weakness/atrophy of the thenar muscles
92
what 2 muscles might also be weak due to pressure on the synovial sheaths
FDS, FDP
93
Ulnar n damage
sensory - ulnar n sensory map of hand | motor - fine motor control (lumbricals 34 and interossei)
94
ulnar n damage. how will it affect the thumb
weak adduction
95
wrist drop sign of damage to what n
radial
96
where can damage to radial n occur
as high as the post humerus, lateral epi
97
what muscles will be affected if radial n is damaged, actions?
ED,ECU,ECRL,ECRB | wrist ext, finger ext, thumb ext and abd
98
4 muslces of thenar eminence
abductor pollicis brevis flexor pollicis brevis obterator pollicis adductor pollicis
99
what are the 3 muscles of the hypothenar eminence
abductor digiti minimi flexor digit minimi brevis opponens digiti mini
100
flex digits at CMP and ext IP
lumbricals
101
which short muscles of the hand abduct digits. add?
dorsal interosseus DAB | palmar interosseus PAD
102
what are the only short muscles of the hand not innervated by the deep branch of the ulnar n.
lumbricals 1.2

DPT Anatomy Test 3 (4 decks)

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