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Block 12 Ellen > L6: movement and muscles of the hand > Flashcards

L6: movement and muscles of the hand Flashcards

1
Q

is there much movement between the bones of the wrist

A

No

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2
Q

Carpal bones

A 
Scaphoid 
lunate
Triquetrum 
pisiform 
hamate 
capitate 
trapezoid 
trapezium
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3
Q

hamate fractures=

A

hook fractures

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4
Q

lunate–>

A

dislocation

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5
Q

scaphoid–>

A

fractures a lot

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6
Q

finger abduction=

A

moving away from middle finger

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7
Q

finger adduction=

A

moving towards the middle finger

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8
Q

lifting the thumb up vertically =

A

abduction

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9
Q

opposition=

A

pen holding grip

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10
Q

what tendons do the lumbricals connect

A

the extensor tendons and the profundus tendons

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11
Q

where do the lumbricals originate

A

flexor digitorum profundus

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12
Q

where do the lumbricals insert

A

the extensor apparatus

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13
Q

innervation of the radial 2 lumbricals

A

median nerve

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14
Q

innervation of the ulnar 2 lumbricals

A

ulnar nerve

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15
Q

function of the lumbricals

A

allows flexion of mp joints whilst keeping ip joints extended

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16
Q

how many lumbricals

A

4

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17
Q

which side are the lumbricals on

A

radial side of each digit

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18
Q

2 main groups of hand muscles

A

thenar and hypothenar eminences

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19
Q

what function do thenar muscles allow

A

abduction of the thumb

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20
Q

thumb muscles=

A

thenar

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21
Q

little finger muscles=

A

hypothenar

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22
Q

through the wrist where does palmaris longus pass

A

over/ attached to the flexor retinaculum

23
Q

what is the palmaris longus aponeurosis important for

A

grip

24
Q

palmar aponeurosis=

A

extension of the palmaris longus tendon inserting into the base of the proximal phalanx

25
Q

nerves going to digits=

A

digital nerves

26
Q

muscles of the thenar eminence

A

flexor pollicis brevis
abductor pollicis brevis
opponens pollicis

27
Q

all muscles of the thenar eminence are innervated by

A

median nerve

28
Q

muscle deep to the thenar eminence=

A

adductor pollicis

29
Q

adductor pollicis=

A

double headed innervated by ulnar nerve

30
Q

nerve for abduction=

A

median nerve

31
Q

nerve for adduction=

A

ulnar nerve

32
Q

nerves for extension and flexion=

A

mixture of median, ulnar and some radial

33
Q

2 types of interosseous muscle

A

dorsal and palmar

34
Q

how many dorsal interosseous muscles

A

4

35
Q

dorsal interosseous origin

A

adjacent sides of metacarpals 2-5

36
Q

1st dorsal interosseous muscle comes from

A

ulna side of first metacarpal and radial side of the 2nd metacarpal

37
Q

muscle action of the dorsal interosseous muscles

A
  • side to side movement of middle finger

- abduction of all other digits

38
Q

DAB=

A

dorsal interosseous abduction the digits

39
Q

how many palmar interosseous

A

3

40
Q

PAD=

A

palmar interosseous adduction the digits

41
Q

other functions of the interosseous muscles

A
  • flex the metacarpophalangeal joint

- extend the interphalangeal joint

42
Q

what arch gives off the common palmar digital arteries

A

superficial palmar arch

43
Q

how many neurovascular bundles in the digits

A

2 on palmar side & 2 on dorsal side

44
Q

median nerve hand muscle supply=

A

half LOAF

45
Q

sensation supply of median nerve

A
  • all the thumb
  • all index finger
  • all middle finger
  • half ring finger
  • most of the palm
46
Q

what sensation is still intact in carpal tunnel syndrome

A

very proximal palm is supplied by a branch of the median nerve before entering the carpal tunnel

47
Q

ulnar nerve muscle supply

A

all the rest of the hand

48
Q

deep branch ulnar nerve supplies motor to

A
  • hypothenar
  • lumbricals
  • interosseous
49
Q

superficial branch ulnar nerve supplies motor to

A

-digital branches –> both sides of little finger and just ulna side of ring

50
Q

motor test for palmar interosseous (ulna nerve)

A

adduction –> holding paper between digits

51
Q

radial nerve supply in hand for motor

A

NONE

52
Q

sensory radial nerve in hand=

A
  • 2 digital dorsal nerve to the index finger
  • 1 dorsal digital branches to ring finger
  • web space
53
Q

palmar digital nerve to the index finger comes from ____

A

median nerve

Block 12 Ellen (25 decks)

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