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tues 5/26 and triangles of posterior shoulder and arm > Tues 5/26 - Dorsal forearm & dorsum of hand > Flashcards

Tues 5/26 - Dorsal forearm & dorsum of hand Flashcards

1
Q

Insertion of brachioradialis

A

styloid process of the radius

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2
Q

innervation of brachioradialis

A

radial nerve c5-c6

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3
Q

action of brachioradialis

A

elbow: flexion
forearm: semipronation

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4
Q

origin of extensor carpi radialis longus

A

lateral supracondylar ridge of distal humerus, lateral intermuscular septum

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5
Q

insertion of extensor carpi radialis longus

A

2nd metacarpal (base)

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6
Q

innervation of extensor carpi radialis longus

A

radial nerve c6-c7

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7
Q

action of extensor carpi radialis longus

A

elbow: weak flexion
wrist: extension and abduction

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8
Q

origin of extensor carpi radialis brevis

A

lateral epicondyle of humerus

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9
Q

insertion of extensor carpi radialis brevis

A

3rd metacarpal (base)

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10
Q

innervation of extensor carpi radialis brevis

A

radial nerve c7-c8

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11
Q

action of extensor carpi radialis brevis

A

elbow: weak flexion
wrist: extension and abduction

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12
Q

origin of extensor digitorum

A

common head (lateral epicondyle of humerus)

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13
Q

insertion of extensor digitorum

A

dorsal digital expansion of 2nd-5th digits

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14
Q

innervation of extensor digitorum

A

posterior interosseous branch of the radial nerve c7-c8

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15
Q

action of extensor digitorum

A

wrist: extension

MCP, PIP, and DIP of 2nd-5th digits: extension/abduction of fingers

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16
Q

origin of extensor digiti minimi

A

common head (lateral epicondyle of humerus)

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17
Q

insertion of extensor digiti minimi

A

dorsal digital expansion of 5th digit

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18
Q

innervation of extensor digiti minimi

A

posterior interosseous branch of the radial nerve c7-c8

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19
Q

action of extensor digit minimi

A

wrist: extension, ulnar abduction of hand

MCP, PIP, and DIP of 5th digit: extension and abduction of 5th digit

20
Q

origin of extensor carpi ulnaris

A 
common head (lateral epicondyle of humerus),
ulnar head (dorsal surface)
21
Q

insertion of extensor carpi ulnaris

A

base of 5th metacarpal

22
Q

innervation of extensor carpi ulnaris

A

posterior interosseous branch of the radial nerve c7-c8

23
Q

action of extensor carpi ulnaris

A

wrist: extension, adduction (ulnar deviation) of hand

24
Q

origin of abductor pollicis longus

A

radius and ulna (dorsal surfaces, interosseous membrane)

25
Q

insertion of abductor pollicis longus

A

base of 1st metacarpal

26
Q

innervation of abductor pollicis longus

A

posterior interosseous branch of the radial nerve c7-c8

27
Q

action of abductor pollicis longus

A

radiocarpal joint: abduction of the hand,

carpometacarpal joint of thumb: abduction

28
Q

origin of extensor pollicis brevis

A

radius (posterior surface and interosseous membrane)

29
Q

insertion of extensor pollicis brevis

A

base of proximal phalanx of thumb

30
Q

innervation of extensor pollicis brevis

A

posterior interosseous branch of the radial nerve c7-c8

31
Q

action of extensor pollicis brevis

A

radiocarpal joint: abduction (radial deviation) of hand,

carpometacarpal and MCP of thumb: extension

32
Q

origin of extensor pollicis longus

A

ulna (posterior surface) and interosseous membrane

33
Q

insertion of extensor pollicis longus

A

base of distal phalanx of thumb

34
Q

innervation of extensor pollicis longus

A

posterior interosseous branch of the radial nerve c7-c8

35
Q

action of extensor pollicis longus

A

wrist: extension and abduction (radial deviation) of hand,
carpometacarpal of thumb: adduction,
MCP and IP of thumb: extension

36
Q

origin of extensor indicis

A

ulna (posterior surface) and interosseous membrane

37
Q

insertion of extensor indicis

A

posterior digital extension of 2nd digit

38
Q

innervation of extensor indicis

A

posterior interosseous branch of the radial nerve c7-c8

39
Q

action of extensor indicis

A

wrist: extension

MCP, PIP, and DIP of 2nd digit: extension

40
Q

origin of supinator

A

olecranon, lateral epicondyle of humerus, radial collateral ligament, annular ligament of radius

41
Q

insertion of supinator

A

radius (between radial tuberosity and insertion of pronator teres)

42
Q

innervation of supinator

A

posterior interosseous branch of the radial nerve c6-c7

43
Q

action of supinator

A

radioulnar joints: supination

44
Q

NOTE - DIP, IP, MCP, PIP abbreviations

A

DIP - distal interphalangeal
IP - interphalangeal
MCP - metacarpophalangeal
PIP - proximal interphalangeal

45
Q

Origin of brachioradialis

A

distal humerus (distal surface), lateral intermuscular septum

tues 5/26 and triangles of posterior shoulder and arm (2 decks)

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