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Gross Anatomy > Wrist and Hand: outline 17 > Flashcards

Wrist and Hand: outline 17 Flashcards

1
Q

What muscles in hand is only in thumb side?

A

Lumbricals

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2
Q

What travels through the carpel tunnel and carpal arch?

A

FDP/FDS/ FPL

Median N

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3
Q

What are the fascia in hand?

A

Extensor retinaculum (dorsal)

Flexor Retinaculum (palmar)

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4
Q

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

A

Radial

Ulnar

To reduce friction between muscles and flexor retinaculum

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5
Q

Where does radial bursae cover? Ulna bursae?

A

Digis 1-4 and FPL

FDP and FDS + little finger

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6
Q

What are the contents in snuff box?

A

radial A

scaphoid

trapezium

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7
Q

Layers of hand from dorsal to palm?

A

Extensor Tendons

Interossei

deep palmar arch + deep branch ulnar N

Flexor Tendons + Lumbricals

median & superior ulnar N branch & SF palmar arch

palmar aponeurosis

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8
Q

What are the fascia in the palmaris aponeurosis

A

palmaris longus tendon

transverse fasculi

SF/ Deep transverse metacarpal ligaments

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9
Q

What does trransverse fasculi do? deep transverse metacarpal ligaments?

A

connect between tendons

support the metacarpals

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10
Q

What is unique about superficial palmar fascia?

A

It has palmaris brevis muscle

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11
Q

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

A

in the phalanges on palmar side

fibrous digital sheaths (annular puileys and cruciate fibers)

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12
Q

What is the function of fibro-osseous tunnels?

A

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

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13
Q

What is synovial digital sheath?

A

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

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14
Q

What is vincula? What is its function?

A

It is the subset of FDP and FDS

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

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15
Q

What is similar between wrist and finger fascia?

A

In wrist, flexor retinaculum covers ulnar& radial bursae

In finger, annular pulleys cover synovil digital sheaths

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16
Q

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

A

lumbricals/ interossei

hypothenar and thenar

interossei

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17
Q

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

A

dorsal (abduction)

palmar (adduction)

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18
Q

OIANB of lumbricals

A

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

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19
Q

What is the nerve supply for interossei muscles? BS?

A

Ulnar N

Deep palmar arch (ulnar A)

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20
Q

What are the muscles in thenar?

A

Abductor Pollucis brevis

Flexor _______

Opponen Pollicis

Adductor Pollicis

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21
Q

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

A

flexor pollucis brevis and adductor pollicis

Median N (except adductor pollicis)

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22
Q

What is the exception of nerve supply in thenar muscles?

A

Adductor pollicis has ulnar N

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23
Q

What are the hypothenar muscles?

A

abductor digiti minimi

flexor __________

Opponen DM

Palmaris Brevis

24
Q

What cause the adduction of digit 5?

A

palmaris interossei

25
Q

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

A

intertendinous that is only on one side

and extra muscles EDM for baby finger and EI for index

26
Q

What does extensor retinaculum consist of?

A

Central tendon of ED

Lateral _______

Transverse retinacular lig

Tendons of interosseous and lumbricals

27
Q

What are the branches of ulnar A in hand?

A

dorsal and palmar carpal branch

superficial/ deep palmar branch

28
Q

What are branches from ulnar artery that supply the wrist?

A

dorsal carpal and palmar carpal branch

29
Q

What does palmar carpal branch of ulna anastomoses with?

A

palmar carpal branch of radius

30
Q

What is the branch of dorsal carpal branch of ulna?

A

dorsal carpal rete

31
Q

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

A

Common Palmar digital

Proper Palmar Digital to supply fingers

32
Q

Where is the deep palmar arch in between?

A

it is in between interossei and lumbricals& flexor tendons

33
Q

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

A

palmar carpal branch

superficial palmar branch

34
Q

What does superficial palmar arch supply?

A

thenar muscles

35
Q

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

A

it travels dorsally (post compartment) onto snuff box

36
Q

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

A

princips pollicis

radialis indicis

dorsal carpal branches

37
Q

What does radialis indicis supply? princips pollicis supply?

A

it supply the radial side of digit 2

the thumb

38
Q

What does dorsal carpal branches give off?

A

dorsal carpal rete

39
Q

What doe dorsal carpal rete of radial A give off?

A

dorsal metacarpal

dorsal digital A

40
Q

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

A

Dorsal side of hand

41
Q

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

A

deep palmar arch

42
Q

What does deep palmar arch of radius give off?

A

palmar metacarpals which gives off palmar perforating branchs

43
Q

What are the veins in hand?

A

dorsal digital vein

intercapitular vein (between head of metacarpal)

basilic (medial)

cephilic (lateral)

44
Q

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

A

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
Q

What does median N in hand give off?

A

palmar cutaneous N

palmar cutaneous digital common and proper

muscular branch of thenar

46
Q

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

A

palmar cutaneous median N

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

47
Q

What does ulnar N branch?

A

palmar cutaneous branch (half digit 4 and full 5)

dorsal cutaneous branch

48
Q

What does dorsal branch of ulnar N travel under?

A

Canal of Guyton & palmar carpal ligament

49
Q

What does the dorsal branch of radial N give off?

A

dorsal digital N

Superficial and deep palm branch

50
Q

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

A

moto to palmaris brevis

common and proper palmar digital

communicating branch

interossei, lumbricals and hypothenar

51
Q

Where does median N travel in hand?

A

under flexor retinaculum on palmar side

52
Q

Lost what muscle cause to claw hand?

A

interossei (flexionf of MCP joints)

Lumbricals (Extension of IP joints)

53
Q

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

A

extension fo MCP joint (FDP)

flexion IP joints (FDS + FDP)

54
Q

What does radial N in hand give off?

A

dorsal superficial digital N (skin only)

55
Q

What are the ligaments that help stabilize the wrist joints?

A

dorsal radiocarpal ligament

palmar carpal ligaments

56
Q

What is the exception of characteristic of carpometal joint?

A

in thumb it is saddle joint instead of plane joint

57
Q

BS for wrist joints?

A

Palmar Carpal Branch (Ulna and radial)

Dorsal Carpal Rete

Deep palmar arch

Gross Anatomy (28 decks)

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