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anatomy > forearm muscles (posterior and lateral) > Flashcards

forearm muscles (posterior and lateral) Flashcards

1
Q

brachioradialis origiin

A

proximal 2/3 of the lateral supracondyler ridges of the humerus

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2
Q

insertion of brachioradialis

A

lateral surface of he distal end of the radius

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3
Q

innervation of brachioradialis

A

radial nerve

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4
Q

action of brachioradialis

A

flexes the forearm in midprone position

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5
Q

origin of extensor carpi radilias longus

A

lateral supracondyler ridge of the humerus

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6
Q

insertion of extensor carpi radialis longus

A

base of the 2nd metacarpal

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7
Q

nerve supply of extenosr carpi radialis longus

A

radial nerve

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8
Q

action of extensor carpi radialis longus

A

extends and abducts the hand at teh wrist joint

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9
Q

origin of extensor carpi radilais brevis

A

lateral epicondyle of teh humerus

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10
Q

insterion of extensor carpi radialis brevis

A

base of the 3rd metacrapal or between teh 2nd and the 3rd

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11
Q

action of extensor carpi radilais brevis

A

extends and abducts the hand at the wrist joint

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12
Q

nerve supply of extensor carpi radilais brevis

A

deep branch of radial nerve

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13
Q

extensor digitorum origin

A

lateral epicondyle of the humerus

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14
Q

extensor digitirum insertion

A

extensor expansion to the middle four digits

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15
Q

action of extnsor digitorum

A

extends hand at the wrist joint
extends tthe medial four fingers and metacarpophalangeal joints

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16
Q

nerve supply of extensor digitorum

A

deep branch of radial nerve

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17
Q

extensor digiti minimi origin

A

lateral epicondyle of the humerus

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18
Q

extensor digiti minimi insertion

A

extensor expansion of the 5th digit

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19
Q

nerve suppply of extensor digiti minimi

A

deep branch of radial nerve

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20
Q

nerve suppply of extensor digiti minimi

A

deep branch of radial nerve

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21
Q

action of extensor digiti minimi

A

extends the 5th digit at metcarpophalangeal and interphalangeal joints

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22
Q

extensor carpi ulnaris origin

A

lateral epicondyle of teh humerus ans posterior border of ulna

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23
Q

extensor carpi ulnaris insertion

A

base of the 5th metacarpal

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24
Q

extensor carpi ulnaris nerve supplu

A

deep branch of radial nerve

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25
Q

extensor carpi ulnaris action

A

extends and aducts the hand at teh wrist joint

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26
Q

abductor pollicis longus origin

A

posterior surface of ulna , radius and interosseuos membrane

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27
Q

abductor pollicis longus insertion

A

base of he 1st metacrpal

28
Q

action of abductor pollicis longus

A

abduction of the thumb and extends it at carpometacpal jonts

29
Q

innervation abductor pollicis longus

A

deep branch of radial nerve

30
Q

extensor pollicis brevis origin

A

posterior surface of radius and interosseous membrane

31
Q

extensor polllicis brevis insertion

A

base of the proximal phalanx of the thumb

32
Q

action of extensor pollicis brevis

A

extends the proximal phalanx at carpometacrapal joints

33
Q

innervation of extensor polllicis brevis

A

deeo branch of radial nerve

34
Q

extensor pollicis longus origin

A

posterior surface of ulna and interosseous membrane

35
Q

ectensor poliicis longus insertion

A

base of distal phalanx of the thumb

36
Q

action of extensor pollicis longus

A

extends distal phalanx of the thumb at carpometacarpal joints and interphalangeal joints

37
Q

innervation of extensor pollicis longu s

A

deep branch of radial nerve

38
Q

extensor indics origin

A

posterior surface of ulna and interosseous membrane

39
Q

extensor indics isnertion

A

extensor expansion of the 2nd digit

40
Q

action of extensor indics

A

extends teh second deigita nd helps extend the hand

41
Q

innervation of extensor indics

A

deep branch of radial nerev

42
Q

superior group muscles are

A

anconeous and supinator

43
Q

superior group innervation

A

radial nerve

44
Q

anconeous is superficial or deep to supinator?

A

superficial

45
Q

supinator is superficial or deep to anconeous?

A

deep

46
Q

anconeous origin

A

posterior sur face of the shaft of the humerus and lateral epicondyle

47
Q

anconeous insertion

A

olecarnon process

48
Q

action of anconeus

A

it extends teharm at the elbow joint

49
Q

supiinator action

A

it suoinates teh forearm at radioulnar joints

50
Q

supinator origin

A

lateral epicondyel of teh humerus and supinator crest of ulna

51
Q

supinator insertion

A

midpoint of teh lateral side of the shaft of radius

52
Q

what is the flexor retinaculum

A

its is a thickening of deep fascia that ataches teh tendons of the long felxors in position with the wrist

53
Q

what is the flexor retinaculum

A

its is a thickening of deep fascia that ataches teh tendons of the long felxors in position with the wrist

54
Q

it is attached mediall by

A

pisiforma sn hook of hamate

55
Q

it is attached laterally by

A

scaphoid and trapezium

56
Q

what tendosna re attached to ots anterior surface? flexor retinaculum

A

flexor carpi ulnars and palamris longus

57
Q

teh anatomyof the carpal tunnel

A

the anterior concave of the carpal bones forma bony gutter and the flexor retinaculum converts itinto a tunnel

58
Q

contens of the carpal tunnel

A

median nerve
the 4 tendons of the flexordigitorum superficials and profundus andthe flexor pollicis longus tendon

59
Q

structures that pass superficially to the flexor retinaculum

A

ulnar nerve
ulnar arteries
flexor carpi ulnaris tendon
palmar cutaneous branch of ulnar nerve
palamar cutaneous branch of median nerve
palamaris longus tendon (if present)

60
Q

median nerve journey in the hand

A

it immediatly divides into lateral and medial branches

the muscular branch supplies teh thernar eminence muscle and the first two lumbricals

the cutaneous nerve the palmar aspect
pf the lateral 3 and 1/2 fingers and dorsally the distal half of teh all of those fingers

61
Q

carapal tunnel syndrome

A

it is caused by he median nerve being compressed as it passes through the carpal tunnel behind the flexor retinaculum

62
Q

what hand is usually affected first with carpal tunel syndome

A

the dominant one

63
Q

sypmtoms of carpal tunnel syndrome

A

pain ,paratheia, numbness of the thumb, index, mddle and the medial side of the ring finger . it is worse at night and at gripping objects

63
Q

sypmtoms of carpal tunnel syndrome

A

pain ,paratheia, numbness of the thumb, index, mddle and the medial side of the ring finger . it is worse at night and at gripping objects

64
Q

why does no parathesia occur with the thenar eminence muscle

A

the palmar cutaneous branch of teh median nerve supplies it and it passes superficially to the flexor retinaculum

anatomy (36 decks)

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