Wrist and Hand: outline 17 Flashcards Preview

Gross Anatomy > Wrist and Hand: outline 17 > Flashcards

Flashcards in Wrist and Hand: outline 17 Deck (57):
1

What muscles in hand is only in thumb side?

Lumbricals

2

What travels through the carpel tunnel and carpal arch?

FDP/FDS/ FPL

Median N

3

What are the fascia in hand?

Extensor retinaculum (dorsal)

Flexor Retinaculum (palmar)

4

What are the synoveal sheaths in palmar? What are their functions?

Radial

Ulnar

To reduce friction between muscles and flexor retinaculum 

5

Where does radial bursae cover? Ulna bursae?

Digis 1-4 and FPL

FDP and FDS + little finger

6

What are the contents in snuff box?

radial A

scaphoid

trapezium

7

Layers of hand from dorsal to palm?

Extensor Tendons

Interossei

deep palmar arch + deep branch ulnar N

Flexor Tendons + Lumbricals

median & superior ulnar N branch & SF palmar arch

palmar aponeurosis

8

What are the fascia in the palmaris aponeurosis

palmaris longus tendon

transverse fasculi

SF/ Deep transverse metacarpal ligaments

9

What does trransverse fasculi do? deep transverse metacarpal ligaments?

connect between tendons

support the metacarpals

10

What is unique about superficial palmar fascia?

It has palmaris brevis muscle

11

Where is the fibro-osseous tunnels? What does it contain?

in the phalanges on palmar side 

fibrous digital sheaths (annular puileys and cruciate fibers)

12

What is the function of fibro-osseous tunnels?

preven tendons (FDP/FDS) from sagging when hand prone

13

What is synovial digital sheath?

the sheath that covers the tendons, locating underneath fibrous digital sheaths

14

What is vincula? What is its function?

It is the subset of FDP and FDS

Pick up blood from digits BS to nuture the FDS and FDP tendons

15

What is similar between wrist and finger fascia?

In wrist, flexor retinaculum covers ulnar& radial bursae

In finger, annular pulleys cover synovil digital sheaths

16

What are the intrinsics muscle? Which one is the deepest?

lumbricals/ interossei

hypothenar and thenar

interossei

17

What does interosseous muscle divide? What unique action does each muscle do?

dorsal (abduction)

palmar (adduction)

18

OIANB of lumbricals

FDP tendons

Extensor expansion of digits 2-5 on radial side of proximal phalanges

Flexion of digits 2-5 at MCP joint

Extension ______ at PIP/DIP joints

Ulnar N: digit 4-5

Median N: digit 2-3

Deep palmar arch

19

What is the nerve supply for interossei muscles? BS?

Ulnar N

Deep palmar arch (ulnar A)

20

What are the muscles in thenar?

Abductor Pollucis brevis

Flexor _______

Opponen Pollicis

Adductor Pollicis

21

What thenar muscles has sesamoid bone? What is the nerve supply for thenar muscles?

flexor pollucis brevis and adductor pollicis

Median N (except adductor pollicis)

22

What is the exception of nerve supply in thenar muscles?

Adductor pollicis has ulnar N

23

What are the hypothenar muscles?

abductor digiti minimi

flexor __________

Opponen DM

Palmaris Brevis

24

What cause the adduction of digit 5?

palmaris interossei

25

Due to what then index and baby finger has more independent movement?

intertendinous that is only on one side

and extra muscles EDM for baby finger and EI for index

26

What does extensor retinaculum consist of?

Central tendon of ED

Lateral _______

Transverse retinacular lig

Tendons of interosseous and lumbricals

27

What are the branches of ulnar A in hand?

dorsal and palmar carpal branch

superficial/ deep palmar branch

28

What are branches from ulnar artery that supply the wrist?

dorsal carpal and palmar carpal branch

29

What does palmar carpal branch of ulna anastomoses with?

palmar carpal branch of radius

30

What is the branch of dorsal carpal branch of ulna? 

dorsal carpal rete

 

31

What does superficial palmar arch of ulna give off? What does this artery continue to give off?

Common Palmar digital

Proper Palmar Digital to supply fingers

 

32

Where is the deep palmar arch in between?

it is in between interossei and lumbricals& flexor tendons

 

33

What does radial A give off at the wrist before turning dorsally?

palmar carpal branch

superficial palmar branch

34

What does superficial palmar arch supply?

thenar muscles

35

Where does radial A travel after branch off palmar carpal branch and superficial palmar branch?

it travels dorsally (post compartment) onto snuff box

36

What does radial artery at snuff box give off on dorsal side?

princips pollicis

radialis indicis

dorsal carpal branches

37

What does radialis indicis supply? princips pollicis supply?

it supply the radial side of digit 2

the thumb

38

What does dorsal carpal branches give off?

dorsal carpal rete

39

What doe dorsal carpal rete of radial A give off?

dorsal metacarpal

dorsal digital A

40

What side of hand are princips/ radialis indicis, dorsal carpal rete travels?

Dorsal side of hand

41

What does radial A give off after emergin from btw 2 heads of dorsal interosseous?

deep palmar arch

42

What does deep palmar arch of radius give off?

palmar metacarpals which gives off palmar perforating branchs

43

What are the veins in hand?

dorsal digital vein

intercapitular vein (between head of metacarpal)

basilic (medial)

cephilic  (lateral)

44

Where exactly does the radial cutaneous N innervate? ulnar cutaneous N?

dorsal surface of hand

digit 5 and half 4 whole hand

palmar side of digits 1-31/2 and half dorsal side of digits 1-31/2

45

What does median N in hand give off?

palmar cutaneous N

palmar cutaneous digital common and proper

muscular branch of thenar

46

What part of median N that doesn't suffer the carpal tunnel syndrom? Why?

palmar cutaneous median N

Because it branches off laterally at antebrachium and doesn't travel under carpal tunnel

47

What does ulnar N branch?

palmar cutaneous branch (half digit 4 and full 5)

dorsal cutaneous branch

48

What does dorsal branch of ulnar N travel under?

Canal of Guyton & palmar carpal ligament

49

What does the dorsal branch of radial N give off?

dorsal digital N

Superficial and deep palm branch

50

What does superficial palmar branch of radial nerve supply? What does deep palmar branch of radial N innervte?

moto to palmaris brevis

common and proper palmar digital

communicating branch

interossei, lumbricals and hypothenar

 

51

Where does median N travel in hand?

under flexor retinaculum on palmar side

52

Lost what muscle cause to claw hand?

interossei (flexionf of MCP joints)

Lumbricals (Extension of IP joints)

53

What muscles that compensate to the muscles lost in claw hand?

extension fo MCP joint (FDP)

flexion IP joints (FDS + FDP)

54

What does radial N in hand give off?

dorsal superficial digital N (skin only)

55

What are the ligaments that help stabilize the wrist joints?

dorsal radiocarpal ligament

palmar carpal ligaments

 

56

What is the exception of characteristic of carpometal joint?

in thumb it is saddle joint instead of plane joint

57

BS for wrist joints?

Palmar Carpal Branch (Ulna and radial)

Dorsal Carpal Rete

Deep palmar arch