Upper Limb III: Hand and Wrist Flashcards Preview

Exam 3- Anatomy > Upper Limb III: Hand and Wrist > Flashcards

Flashcards in Upper Limb III: Hand and Wrist Deck (19)
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1

most of the flexion of the wrist occurs at which joint?

mid carpal joint (60%)

40% occurs at radoiocarpal joint

2

most of the extension of the wrist occurs at which joint?

radoiocarpal joint (67%)

3

these form a moveable hood over the MP and IP joints of the fingers referred to as the extensor expansion

extensor tendons

4

what travels in the carpal tunnel

median nerve
f digitorum superficialis
f digitorum profundus
f. retinaculum
f. carpi radialis

5

what is dupuytren's contracture

progressive shortening and thickening of palmar fascia that pulls 4th and 5th digits into partial flexion

tends to be hereditary

6

long tendons of what muscles enter the hand

flexor digitorum superficialis
flexor digitorum profundus

7

ulnar bursa

flexor sheath beneath the flexor retinaculum where the long tendons of f. digitorum superciialis enter

8

tensosynovitis

infection to the synovial sheaths that cause inflammation of the tendon and synovial sheath

if in the 5th digit, it can spread into carpal tunnel and into forearm

9

extensor tendons form a moveable hood where? what is this called?

MP and IP, called extensor expansion

attaches dorsal digital expansion to the extensor muscles and intrinsic hand muscles

10

Thenar eminence is composed of which three muscles

abductor pollicis brevis
flexor pollicis brevis
opponens pollicis

11

intrinsic thenar muscles (2)

thenar eminence (3 of them)
adductor pollicis

12

two heads of the adductor pollicis

oblique head
transverse head

13

two heads of flexor pollicis brevis

superficial head
deep head

14

hypothenar eminence is composed of what 3 muscles

flexor digiti minimi
abductor digiti minimi
opponens digiti minimi

15

proximal attachment of opponens pollicis

flexor rentinaculum and tubercles of scaphoid and trapezium

16

distal attachment of opponens pollicis

lateral side of 1st metacarpal

17

actions of opponens pollicis

oppose thumb and medially rotate 1st metacarpal

18

innervation of opponens pollicis

recurrent branch of median nerve

19

proximal attachment of abductor pollicis brevis

flexor retinaculum and tubercles of scaphoid and trapezium