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Gross Anatomy 1 > Posteror Forearm Muscles > Flashcards

Posteror Forearm Muscles Flashcards

1
Q

Which muscles are in the superficial layer

A

Brachioradialis, Extensor carpi radialis longus, Extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris

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2
Q

Muscles of the posterior forearm have the general action of

A

extension of the forearm, digits, thumb

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3
Q

Brachioradialis origin is

A

Proximal 2/3 of lateral supraepicondylar ridge of humerus

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4
Q

Brachioradialis insertion is

A

Lateral surface of distal radius near stoyloid process

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5
Q

Brachioradialis action is

A

Flexion at elbow with high reps

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6
Q

All posterior forearm muscles are innervate by the

A

Radial nerve C5-T1

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7
Q

Brachioradialis innervation is

A

Radial nerve C5-C7

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8
Q

Brachioradialis vasculature is

A

Recurrent radial artery

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9
Q

Extensor carpi radialis longus origin is

A

Lateral Supra-epicondylar ridges of humerus

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10
Q

Extensor carpi radialis longus insertion is

A

Dorsal base of 2nd MC

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11
Q

Extensor carpi radialis longus action is

A

Extension and radial deviation

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12
Q

Extensor carpi radialis longus innervation is

A

Radial nerve C6-C7

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13
Q

Extensor carpi radialis brevis origin is

A

Lateral condole of humerus via common extensor tendon

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14
Q

Extensor carpi radialis brevis insertion is

A

Dorsal basal of 3rd MC

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15
Q

Extensor carpi radialis brevis action is

A

Extension and abduction of wrist

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16
Q

Extensor carpi radialis brevis innervation is

A

Radial nerve C7-C8

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17
Q

Extensor carpi radialis brevis vasculature is

A

Radial artery

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18
Q

Extensor digitorum origin is

A

Lateral condyle of humerus via common extensor tendon

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19
Q

Extensor digitorum insertion is

A

Extensor expansion of medial 4 digits

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20
Q

Extensor digitorum action is

A

Extends medial 4 digits at MCP joint, aids PIP joint

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21
Q

Extensor digitorum innervation is

A

Radial nerve C7C8

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22
Q

Extensor digitorum vasculature is

A

Posterior interosseous artery

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23
Q

Extensor digiti minimi origin is

A

lateral condyle of humerus via common extensor tendon

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24
Q

Extensor digiti minimi insertion is

A

Extensor expansion of 5th digit

25
Q

Extensor digiti minimi action is

A

Extension of 5th digit

26
Q

Extensor digiti minimi innervation is

A

Radial nerve C7C8

27
Q

Extensor carpi ulnaris origin is

A

Lateral epicondyle of humerus, posterior ulnar via aponeurosis

28
Q

Extensor carpi ulnaris insertion is

A

Dorsal base of 5th MC

29
Q

Extensor carpi ulnaris action is

A

Extension and ulnar deviation

30
Q

Extensor carpi ulnaris innervation is

A

Radial nerve C7C8

31
Q

Extensor carpi ulnaris vasculature is

A

Ulnar artery

32
Q

Muscles of the posteiror thumb deep layer are

A

Extensor indices, and supinator

33
Q

Extensor indices origin is

A

Posterior distal 1/3 of ulna and IOM

34
Q

Extensor indices insertion is

A

Extensor expansion of 2nd digit

35
Q

Extensor indices action is

A

Extends 2nd digit

36
Q

Extensor indices innervation is

A

Deep radial nerve C7C8

37
Q

Extensor indices vasculature is

A

Posterior interosseous artery

38
Q

Supinator origin of

A

Lateral epicondyle of humerus, radial collateral and annular ligaments, supinator fossa, crest of ulna

39
Q

Supinator insertion is

A

Lateral posterior and anterior surfaces of proximal 1/3 of radius

40
Q

Supinator action is

A

Supinates radius

41
Q

Supinator innervation of

A

radial nerve C7C8

42
Q

Supinator vasculature of

A

Recurrent radial artery

43
Q

Muscles of the posterior forearm thumb outcropping are

A

Abductor pollicus longus, extensor pollicus brevis, extensor pollicus longus

44
Q

Abductor pollicis longus origin is

A

Posterior proximal half of ulna + radius and IOM

45
Q

Abductor pollicis longus insertion is

A

Base of 1st MC

46
Q

Abductor pollicis longus action is

A

Abduction of thumb and extension and CMC joint

47
Q

Abductor pollicis longus innervation is

A

Radial nerve C7C8

48
Q

Abductor pollicis longus vasculature is

A

Posterior interosseous

49
Q

Extensor pollicis brevis origin of

A

Posteiror distal 1/3 of radius and IOM

50
Q

Extensor pollicis brevis insertion of

A

Dorsal base of proximal phalanx of thumb

51
Q

Extensor pollicis brevis action of

A

Extension of proximal phalanx and MCP and CMC joints. Helps radial deviation

52
Q

Extensor pollicis brevis innervation of

A

Radial nerve C7C8

53
Q

Extensor pollicis brevis vasculature of

A

Posteiror interosseous

54
Q

Extensor pollicis longus origin of

A

Posterior middle 1/3 of ulna and IOM

55
Q

Extensor pollicis longus insertion

A

Dorsal base of distal phalanx of thumb

56
Q

Extensor pollicis longus action of

A

Extension of distal phalanx of thumb at IP joint

57
Q

Extensor pollicis longus innervation at

A

Radial Nerve C7C8

58
Q

Extensor pollicis longus vasculature of

A

Posterior interosseous

Gross Anatomy 1 (10 decks)

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