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Clinical Anatomy - Muscles of UE > Muscles of Posterior Compartment of Forearm > Flashcards

Muscles of Posterior Compartment of Forearm Flashcards

1
Q

Brachioradialis - P

A

proximal 2/3rds of lateral supracondylar ridge of humerus

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2
Q

Brachioradialis - D

A

lateral surface of distal end of radius proximal to styloid process

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3
Q

Brachioradialis - N

A

radial nerve

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4
Q

Brachioradialis - A

A

weak elbow flexion (max when thumb up)

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5
Q

Extensor carpi radialis longus - P

A

lateral supracondylar ridge of humerus

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6
Q

Extensor carpi radialis longus - D

A

base of 2nd metacarpal

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7
Q

Extensor carpi radialis longus - N

A

radial nerve

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8
Q

Extensor carpi radialis longus - A

A

wrist extension

wrist ABduction/radial deviation

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9
Q

Extensor carpi radialis brevis - P

A

lateral epicondyle of humerus, posterior border of ulna via shared aponeurosis

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10
Q

Extensor carpi radialis brevis - D

A

dorsal aspect of 3rd metacarpal

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11
Q

Extensor carpi radialis brevis - N

A

radial nerve

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12
Q

Extensor carpi radialis brevis - A

A

wrist extension

wrist ABduction/radial deviation

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13
Q

Extensor digitorum - P

A

lateral epicondyle of humerus

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14
Q

Extensor digitorum - D

A

extensor expansions of medial 4 fingers

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15
Q

Extensor digitorum - N

A

radial nerve

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16
Q

Extensor digitorum - A

A

wrist extension
extension fingers at MCP joints (primarily)
extension of fingers at IP joints (secondarily)

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17
Q

Extensor digiti minimi - P

A

lateral epicondyle of humerus

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18
Q

Extensor digiti minimi - D

A

extensor expansions of 5th fingers

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19
Q

Extensor digiti minimi - N

A

radial nerve

20
Q

Extensor digiti minimi - A

A

wrist extension
extension of 5th finger at MCP joint (primarily)
extension of 5th finger at IP joint (secondarily)

21
Q

Extensor carpi ulnaris - P

A

lateral epicondyle of humerus

22
Q

Extensor carpi ulnaris - D

A

dorsal aspect of base of 5th metacarpal

23
Q

Extensor carpi ulnaris - N

A

radial nerve

24
Q

Extensor carpi ulnaris - A

A

wrist extension

wrist adduction/ulnar deviation

25
Q

Supinator - P

A

lateral epicondyle of humerus, RCL and anular ligaments, supinator fossa, crest of ulna

26
Q

Supinator - D

A

lateral, posterior, and anterior surfaces of proximal third of radius

27
Q

Supinator - N

A

radial nerve

28
Q

Supinator - A

A

forearm supination

29
Q

Abductor pollicis longus - P

A

posterior surface of proximal halves of ulna, radius, and interosseous membrane

30
Q

Abductor pollicis longus - D

A

base of 1st metacarpal

31
Q

Abductor pollicis longus - N

A

posterior interosseous nerve

32
Q

Abductor pollicis longus - A

A

wrist extension
thumb ABduction
thumb extension at CMC joint

33
Q

Extensor pollicis longus - P

A

posterior surface of middle third of ulna and interosseous membrane

34
Q

Extensor pollicis longus - D

A

base of distal phalanx of thumb

35
Q

Extensor pollicis longus - N

A

posterior interosseous nerve

36
Q

Extensor pollicis longus - A

A

wrist extension
DIP extension of thumb
MCP extension of thumb

37
Q

Extensor pollicis brevis - P

A

posterior surface of distal third of radius and interosseous membrane

38
Q

Extensor pollicis brevis - D

A

dorsal base of proximal phalanx of thumb

39
Q

Extensor pollicis brevis - N

A

posterior interosseous nerve

40
Q

Extensor pollicis brevis - A

A

wrist extension

extension at MCP joint of thumb

41
Q

Extensor indicis - P

A

posterior surface of distal third of ulna and interosseous membrane

42
Q

Extensor indicis - D

A

extensor expansion of 2nd finger

43
Q

Extensor indicis - N

A

posterior interosseous nerve

44
Q

Extensor indicis - A

A

wrist extension

2nd finger extension

45
Q

Posterior Forearm Muscles - Superficial layer (6)

A 
brachioradialis
extensor carpi radialis longus
extensor carpi radialis brevis
extensor digitorum
extensor digiti minimi
extensor carpi ulnaris
46
Q

Posterior Forearm Muscles - Deep layer (1)

47
Q

Posterior Forearm Muscles - “Outcropping” of Deep layer (4)

A

abductor pollicis longus
extensor pollicis longus
extensor pollicis brevis
extensor indicis

Clinical Anatomy - Muscles of UE (8 decks)

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