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Human Anatomy Fall 2017 > WEEK 4 WRIST AND HAND > Flashcards

WEEK 4 WRIST AND HAND Flashcards

1
Q

Lack of common creases in the palm can indicate?

A

Abnormalities

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2
Q

Thenor=

A

Thumb

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3
Q

Hypothenor=

A

Pinky

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4
Q

What are the anatomic snuffbox boundaries?

A

extensor pollicis longus tendon, abductor pollicis longus tendon, extensor pollicis brevis tendon

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5
Q

How do you get snuffbox?

A

Make a hitchhikers thumb

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6
Q

What is found in anatomical snuffbox?

A

Radial artery, superficial branch of radial n, scaphoid bone, trapezium, 1st metacarpal

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7
Q

What are the 4 bones that mark the corners of carpal tunnel?

A

Trapezium, scaphoid, pisiform, hook of hamate (transverse carpel ligament)

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8
Q

What is the ligament spanning the carpal tunnel?

A

Transverse carpel ligament

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9
Q

Should be able to feel the pisiform on what side of hand?

A

Palmer

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10
Q

What is the protuberance you see on medial posterior side of wrist?

A

Head of ulna

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11
Q

What wrist bone directly articulates with radius?

A

Scaphoid

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12
Q

Why is the interosseous membrane important?

A

Because the radius is in direct contact with the wrist but the ulna is not. So this membrane prevents excess strain on radius by moving some of the force over to the ulna

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13
Q

The bulk of the hand is innervated by?

A

Ulnar nerve

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14
Q

Thenar compartment of hand is innervated by?

A

Recurrent branch of median nerve

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15
Q

Adductor compartment of hand is innervated by?

A

Ulnar nerve

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16
Q

Hypothenar compartment of hand is innervated by?

A

Ulnar nerve

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17
Q

Central compartment of hand is innervated by?

A

Median and ulnar nerve

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18
Q

Interosseous compartment of hand is innervated by?

A

Ulnar nerve

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19
Q

What is the most distal phalanx joint?

A

DIP

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20
Q

What is the middle phalanx joint?

A

PIP

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21
Q

What is the more proximal phalanx joint (nearest wrist)?

A

MCP

22
Q

Why is the transverse carpal ligament important?

A

Anchors down all tendons, acts as a point of tension

23
Q

What does the transverse carpal ligament encase?

A

Carpal tunnel

24
Q

Tendon of palmaris longus is located?

A

Superficial the transverse carpal ligament on palmar side of hand (and then splits up between digits 2-5)

25
Q

Abduction of thumb?

A

Looks like a Crab… ABC= ABduction-Crab

26
Q

Are all hand muscles longus or brevis?

A

Brevis

27
Q

The ENTIRE thenar compartment is innervated by?

A

Recurrent branch of median nerve

28
Q

What are the two muscles innervated by ulnar nerve even though they act on thumb?

A

Adductor pollicis transverse hear (across) and adductor pollicis oblique head (diagonal)

29
Q

What muscle created the bulge on the pinky side of your hand when you make a fist?

A

Palmaris brevis

30
Q

Intero=

A

Between

31
Q

PAD is a way to remember?

A

Palmer adduct

32
Q

DAB is a way to remember?

A

Dab dorsal interossei abduct

33
Q

MEATLOAF is a way to remember?

A

Innervation! ME=median; L=Lumbricals 1&2; OAF=opponins, abductor, flexor (thenor compartment)

34
Q

HAIL is a way to remember?

A

Innervation of hypothenar compartment with Ulnar nerve. H=hypothenar muscle; A=adductor pollicis; I= interossei, L= lumbrical 3&4

35
Q

Lumbricals do what?

A

Flex MCP joint

36
Q

FDS does what?

A

Same as lumbricals, but ALSO flexes the middle phalanges (2-5) at PIP joint

37
Q

FDP

A

Same as FDS, but ALSO flex DIP joints (curling fingers into fist; FLEXES ALL JOINTS)

38
Q

Synovial Sheets

A

Is an additional tendon to act as a pulley to enclose OTHER tendons that act on a joint, reduce friction and are very fluid

39
Q

Synovial Cysts

A

Created when synovial sheets become inflamed

40
Q

Superficial palmar arch

A

Artery in palm, mainly with ulnar and some radial

41
Q

Deep palmar arch

A

Artery; mainly with radial artery but some ulnar

42
Q

Where are proper palmar digital arteries?

A

On either side of each phalange

43
Q

Recurrent branch of the median nerve?

A

Supplies innervation to the thumb (thenar compartment)

44
Q

Median nerve is inside or outside the carpal tunnel?

A

Inside (passes through carpal tunnel)

45
Q

Ulnar nerve is inside or outside the carpal tunnel?

A

Outside (passes OVER carpal tunnel)

46
Q

What is carpal tunnel syndrome?

A

Inflammation of synovial sheaths surrounding carpal tunnel

47
Q

What is affected by carpal tunnel syndrome?

A

Lateral 3.5 digits, NOT the palm (progressive weakness in thumb, atrophy)

48
Q

What nerve is affected with carpal tunnel syndrome?

A

Median nerve bc its inside carpal tunnel (does NOT affect ulnar nerve)

49
Q

When you extend your fingers, what are the tendons you see pop up on the back of your hand?

A

tendons of the extensor digitorum

50
Q

When you look at your palm, you see two large muscle buldgees (one under thumb, other under pinky), what are their surface anatomy names?

A

thenar eminance

hypothenar eminance

51
Q

Palmar aponeurosis

A

Tendonus covering of tendons on palmer side of hand

Human Anatomy Fall 2017 (19 decks)

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