lec8

Question 1

what is another name for the wrist?

Answer 1

radiocarpal

Question 2

what is the proximal part of the wrist?

what is the arrangement from lateral to medial?

Answer 2

1. distal end of the radius
2. articular disc

scaphoid, lunate, triquetrum , pisiform

she love the pie

Question 3

what is the arrangement from lateral to medial of the distal part?

Answer 3

trapezium, trapezoid, capitate(sounds like capacity), hamate

tom the cookie hamster
trapeziUM = thUMB

Question 4

what are the ligaments?

Answer 4

medial(ulnar) collateral ligament

lateral(radial) collateral ligament

Question 5

functional consideration
1. scaphoid is frequently what so beware of what?

2. lunate is frequently what so beware of what?

Answer 5

fractured carpal bone; avascular necrosis and poor healing

dislocated carpal bone; median nerve

Question 6

anatomical snuffbox
1. a triangular depression where and bounded by what and how

2. tender to palpation when

Answer 6

1. root of thumb; tendons of the abductor pollicis longus and extensor pollicis brevis muscles laterally, extensor pollicis longus muscle medially

scaphoid fracture

Question 7

dorsal interossei

Answer 7

1. adjacent sides of two metacarpal bones
2. extensor expansions and base of digits 2-4
3. flex mcp joints, extend IP, abduct digits 2,3,4
4. innervation: ulnar

Question 8

palmar interossei

Answer 8

1. palmar suface of 2nd, 4th, and 5th metacarpals
2. extensor expansions of digits 2,4,and 5
3. flex mcp joint; extend IP joints; adduct digit 2,4,5

Question 9

lumbricals

Answer 9

1. tnedons of flexor digitorum profundus
2. lateral sides of extensor expansion digits 2-5
3. flex mcp joints, extend IP joints

Question 10

extensor tendinous expansions

1. compromise of what of what
2. receive insertions of what and what
3. effectively carry info of what and what from what to what to what to what

Answer 10

1. distal ends; extensor digitorum communis tendons
2. lumbricals and interossei
3. insertions; llumbricals; ventral; MP joints, dorsal, IP joints

Question 11

functional considerations

1. take # motor nerves for full digital extension
2. what does the radial nerve do?
3. what does the ulnar and median nerve do?

Answer 11

1. 3; extension
2. MP extension
3. IP joints

Question 12

the what compartment contains what which are innervated by what

Answer 12

1. 3 muscles; recurrent branch of median nerve

Question 13

abductor pollicis brevis

Answer 13

1. flexor retinaculum, scaphoid and trapezium
2. proximal phalanx of thumb
3. abduct the thumb; aid in opposition

Question 14

flexor pollicis brevis

Answer 14

1. flexor retiaculum and trapezium

2 proximal phalanx of thumb

3. flexes thumb; aids in opposition

Question 15

opponens pollicis

Answer 15

1. flexor retinaculum and trapezium
2. lateral side of 1 metacarpal
3. opposition

Question 16

what happens when the opponens pollicis muscle becomes dysfunctional?

Answer 16

the majority of the use of the hand is lost

Question 17

the central compartment contains what and what which are innervated by what nerve except what

Answer 17

adductor pollicis muscles and lumbricals and interossei

ulner

lateral 2 lumbricals: lumbricals 1 & 2

Question 18

adductor pollicis

Answer 18

1. not a thenar muscle
2. 2 and 3 metacarpal boens
3. medial side of the proximal phalanx of thumb
4. adducts thumb, assists opposition

Question 19

hypothenar eminence contain # muscles all innervated by what?

Answer 19

1. 3
2. ulnar
3. abductor digiti minimi, flexor digiti minimi, opponenes digiti minimi

Question 20

neurovascular structures

superficial palmar artery arch fed primarily by what and gives origin to what

Answer 20

1. ulnar artery

2. palmar digital arteries

Question 21

neurovascular structures

deep pal mar artery arch fed primarily by what and lies proximal to what and w/i the same plane as what of what

Answer 21

1. radial artery
2. superficial arch
3. motor branches of the ulnar nerve

Question 22

what test demonstrate the importance of 2 arterial arches providing collateral blood flow to the hand?

Answer 22

allen

Question 23

median nerve

1. enters the hand passing through
2. provide motor innervation to what and which are
3. provides cutaneous innervation to what and travel with what

Answer 23

carpal tunnel

5 of the intrinsic muscles in hand; 3 thenar muscles; 2 radial lumbricals

radial 3 1/2 digits; palmar digital arteries

Question 24

ulnar nerve
1. enters the palm by crossing what and how

2. provide motor innervation to what except for what
3. provide cutaneous innervation to what of what

Answer 24

superficial to the flexor retinaculum

all of the intrinsic muscles of the hand; 5 innervated by median nerve

palmar surface of medial 1 1/2 digits

Question 25

sensory distribution 1. axillary nerve 2. musculocutaneous nerve 3. radial nerve 4. median 5. ulnar nerve A Muscle rises More upward

Answer 25

1. c5,c6: lateral proximal arm 2. c5,c6: anterior and lateral forearm 3. c5-c6, t1: posterior arm and forearm; 1st web space; dorsal aspect of radial 2 1/2 fingers 4. c6-c8, t1: raidal surface of palm; palmar aspect of radial 3 1/2 fingers 5. c8-t1: ulnar aspect of palm, palmar aspect of ulnar 1 1/2 fingers, dorsal aspect of ulnar 2 1/2 fingers

Question 26

nerve root lesions always involve: peripheral nerve and plexus lesions involve:

Answer 26

1 dermatime multiple dermaoe

Question 27

carpal tunnel 1. what acts as a roof over carpal groove to form a tunnel that transmits 9 tendons(FDS, FDP, FPL), synovial sheathes,a d median nerve

Answer 27

flexor retinaculum

Question 28

carpal tunnel syndrome : | 1. can resultin what of these tendoons and what of the median nerve to make

Answer 28

1. pain w/ finger and wrist flexion/extension 2. burning sensation and numbness over the palmar surface of radial 3 1/2 digits 3. weakness and atoophy of thenar muslces