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ANAT 315 > arm > Flashcards

arm Flashcards

1
Q

muscles in the anterior compartment of arm

A

coracobrachialis
brachialis
biceps

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2
Q

coracobrahachilas

A

insert halfway down the medial side of humerus
innervation- muscultaneous nerve
action - adductor

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3
Q

what are the anterior compartment of the arm muscles innervated by

A

musculotaneous nerves

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4
Q

brachialis (drinking)

A

origin- flat side of distal humerus
insertion- tubercle of the ulna
innervation- muscultaneous nerve
action- flexor

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5
Q

biceps

A

origin - two beacuse 2 heads

long head- supragleniod tubercle
short head - coracoid process
insertion - radial tubercle
action- flex
innervation- muscultaneous nerve

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6
Q

what is part of the posterior compartment of the arm

A

triceps (brachii)

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7
Q

triceps

A

3 heads
insertion on the olecranon of the ulna
innervation- radial nerve
action- extensor

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8
Q

bones of the forearm

A

radius and ulna

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9
Q

how many carpal bones are there

A

8

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10
Q

proximal row of carpal bones

A

pisiform, triquetral,lunate,scaphoid

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11
Q

distal row of carpal bones

A

hammate,capatate,trapeziod,trapezium

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12
Q

how do you remeber metacarpal bones

A

silly lovers try positions - proximal
that they cant handle - distal

moving laterally to medial

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13
Q

where are the metacarpal bones

A

palm of the hand

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14
Q

what are the groups of the anterior forearm muscles

A

superfical
intermediate
deep

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15
Q

what is interosseous membrane

A

membrane between the bones

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16
Q

what is the CFO

A

common flexor origin
medial epicondyle & supracondylar ridge of humerus

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17
Q

how many muscles are in the superficial group of forearm muscles and how do you remember them

A

4, PASS FAIL PASS FAIL

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18
Q

what are the pass fail muscles

A

PASS - Pronator teres
FAIL - Flexor carpi ulnaris
PASS- Palmaris longus
Fail - flexor carpi radialis

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19
Q

pronator teres

A

origin- CFO
insertion- lateral side of the shaft of the radius
innervation- median nerve
action- pronation (in the name!)

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20
Q

flexor carpi radials

A

origin- CFO
insertion- metacarpals 2&3
innervation- medial nerve
action- wrist flexor

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21
Q

palmaris longus

A

useless
origin- CFO
insertion- palmar aponeurosis
action- flexor (weak)

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22
Q

flexor carpi ulnaris

A

origin- CFO
insertion- pisiform
innervation- ulnar nerve (only one!!)
function- flexes/adducts

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23
Q

what is flexor retinaculum

A

fibours “bridge” that crosses from the medial to the lateral side of the wrist
forms the roof of the carpal tunnel

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24
Q

what is part of the intermediate group of the forearm

A

flexor digitorm profundus

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25
Q

what is the origin of the flexor digitorm superficials

A

starts at the median epicondyle and runs down the arm, across the coronoid process, to a line on the anterior radius

26
Q

what are the innervations/actions of the intermediate group (anterior forearm)

A

innervation- median nerve
actions- flexion of the wrist, flexsion of the MP and PIP joint

27
Q

how many muscles are part of the deep group

A

3

28
Q

what are the muscles part of the deep group(anterior forearm)

A

flexor pollicis longus
flexor digitorum profundus
pronator quadratus

29
Q

flexor pollicis longus

A

(long flexor of thumb)
origin- middle part of radius
insertion- distal phalanx of the thumb
innervation - median nerve
action- flexor of the thumb

30
Q

flexor digitorm profundus

A

origin- proximal third quarter of ulnar shaft
insertion- base of distal phalanges
innervation- half median/ half ulnar
action- flex every joint they pass

31
Q

pronator quadratus

A

origin- must be on ulna
insertion- radius
innervation median
action- pulls radius over ulna

32
Q

what doesn’t go through the carpal tunnel

A

palmaris longus tendon
flexor carpi ulnaris
ulnar nerve and artery
radial artery
flexor carpi radialis

33
Q

how many groups are in the posterior forearm muscles and what are they

A

2, superficial and deep

34
Q

what is part of the superficial group of the posterior forearm

A

bracioradialis
extensor carpi radialis longus
exenstor carpi radialis brevis
extensor digitorm
extensor digiti minimi

35
Q

bracioradialis

A

origin- CEO
insertion- styolid process
innervation- radial nerve
action- flexes

36
Q

what is the CEO

A

common extensor origin
lateral epicondyle and supracondylar ridge

37
Q

extensor carpi radialis longus/extensor carpi radialis brevis

A

origin - CEO
insertion- long- base of second metacarpal
brevis- third muscle
innervation- radial nerve
action- extend and abdut the wrist

38
Q

extensor carpi ulnaris

A

origin- CEO
insertion- base of metacarpal 5
innervation- radial
action- extends with flexor carpi ulnaris

39
Q

how many muscles are part of the deep group and what are they called (posterior forearm)

A

5, supinator
abductor pollicis longus
extensor pollicis brevis
extensor pollicis longus
extensor indicis

40
Q

supinator

A

origin- back of the radial notch of the ulna
insertion- lateral side of the radius
innervation- radial nerve
action- supination

41
Q

abductor pollicis longus

A

origin- interosseous membrane and ulna and radius
insertion- base of first metacarpal
innervation - radial nerve

42
Q

extensor pollicis brevis

A

origin- interosseous membrane and ulna and radius
insertion- base of proximal phalanx of the thumb
innervation- radial nerve

43
Q

extensor pollicis longus

A

originates- next to abductor pollicis
insertion- distal phalanx
innervation- radial nerve

44
Q

extensor indicis

A

origin- short extensor of thumb
insertion- extensor expansion of index finger
innervation- radial nerve

45
Q

what are the types of muscles in the hand

A

thenar muscles
hypothenar muscles
lumbriacal muscles
interossi and adductor pollicis

46
Q

thenar muscles and how many muscles, what are they innervated by

A

form the swelling at the base of the thumb
3, innervated by the recurrent branch of median nerve

47
Q

abductor pollicis brevis

A

origin- scaphoid
insertion- proximal phalanx of the thumb
innervation- recurrent branch of median nerve

48
Q

flexor pollicis brevis

A

origin- flexor retinaculum
insertion- proximal phalanx
innervation- recurrent branch of median nerve
lateral of two found in base of the proximals phalanx

49
Q

opponens pollicis

A

origin - distal flexor retinaculum
insertion- trapezium
action- oppositiion of the thumb (able to touch other fingers on hand)

50
Q

what are the hypothenar muscles

A

abductor digiti minmi
flexor digiti minimi brevis
opponenes digiti minimi brevis

51
Q

what are the hypothenar muscles

A

abductor digiti minmi
flexor digiti minimi brevis
opponenes digiti minimi brevis

52
Q

abductor digiti minimi/flexor digiti minimi brevis

A

origin- pisiform/hook of hamate
insertion- abductor- medial side
brevis- lateral side
innervation- ulnar nerve

53
Q

opponenes digiti minimi brevis

A

origin- flexor retinaculum and hook of hammate
insertion- medial side of metacarpal 5
innervation - ulnar nerve

54
Q

lumbrical muscles

A

worm muscles
median nerve and ulnar nerve
flex the MP and PIP joints
insert on proximal joint

55
Q

adductor pollicis

A

oblique head and transverse head
- transverse origin- shaft of middle metacarpal
- oblique head origin- capitate

insert on sesamoid bone
innervation - ulnar
action - adduct and abduct

56
Q

palmar interossei

A

origin- axial side of metacarpal 2,4,5
insert- extensor expansions
innervation- ulnar
action- flex

57
Q

dorsal interossei

A

origin- four spaces between 5 metacarpals
insertion- run toward axis, insert on index and ring fingers
function-adduct
innervation- ulnar

58
Q

where does the hands blood supply come from

A

superficial and deep palmar arches

59
Q

types of joints in the hand

A

carpal joints
carpometacarpal joints

60
Q

how

A

ANAT 315 (9 decks)

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