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Anatomy AOINAS > Week 2 Extensors > Flashcards

Week 2 Extensors Flashcards

1
Q

Brachioradialis Origin

A

proximal two thirds of lateral supra-epicondylar ridge of humerus

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2
Q

Brachioradialis Insertion

A

lateral surface of distal end of radius proximal to styloid process

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3
Q

Brachioradialis Innervation

A

Radial nerve (C5, C6, C7)

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4
Q

Brachioradialis Action

A

weak flexion of elbow joint, maximal when forearm is in midpronated position

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5
Q

Brachioradialis Arterial Supply

A

radial recurrent, radial collateral, and radial arteries

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6
Q

Extensor Carpi Radialis Longus Origin

A

lateral supra-epicondylar ridge of humerus

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7
Q

Extensor Carpi Radialis Longus Insertion

A

dorsal aspect of base of 2nd metacarpal

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8
Q

Extensor Carpi Radialis Longus Innervation

A

Radial nerve (C6, C7)

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9
Q

Extensor Carpi Radialis Longus Action

A

extends and abduct wrist joint; extend carpometacarpal joints

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10
Q

Extensor Carpi Radialis Longus Arterial Supply

A

radial recurrent, radial collateral, and radial arteries

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11
Q

Extensor Carpi Radialis Brevis Origin

A

lateral epicondyle of humerus (common extensor origin)

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12
Q

Extensor Carpi Radialis Brevis Insertion

A

dorsal aspect of base of 3rd metacarpal

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13
Q

Extensor Carpi Radialis Brevis Innervation

A

deep branch of radial nerve (C7, C8)

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14
Q

Extensor Carpi Radialis Brevis Action

A

extends and abducts wrist joint, extends carpometacarpal joints (active during first clenching)

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15
Q

Extensor Carpi Radialis Brevis Arterial Supply

A

radial recurrent and radial arteries

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16
Q

Extensor Carpi Ulnaris Origin

A

lateral epicondyle of humerus

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17
Q

Extensor Carpi Ulnaris Insertion

A

dorsal aspect of base of 5th metacarpal

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18
Q

Extensor Carpi Ulnaris Innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

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19
Q

Extensor Carpi Ulnaris Action

A

extends and adducts wrist, carpometacarpal joints (active during first clenching)

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20
Q

Extensor Carpi Ulnaris Arterial Supply

A

radial recurrent and posterior interosseous arteries

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21
Q

Extensor digitorum Origin

A

lateral epicondyle of humerus (common extensor origin)

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22
Q

Extensor digitorum Insertion

A

extensor expansions of medial four fingers

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23
Q

Extensor digitorum Innervation

A

Posterior interosseous nerve (C7, C8), continuation of the deep radial nerve

24
Q

Extensor digitorum Action

A

extends wrist joint, carpometacarpal joints, extends medial four fingers primarily at metacarpophalangeal joints, secondary at interphalangeal joints

25
Q

Extensor digitorum Arterial Supply

A

radial recurrent, anterior and posterior interosseous arteries

26
Q

Extensor Digiti Minimi Origin

A

lateral epicondyle of humerus (common extensor origin)

27
Q

Extensor Digiti Minimi Insertion

A

extensor expansion of 5th finger

28
Q

Extensor Digiti Minimi Innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

29
Q

Extensor Digiti Minimi Action

A

extends wrist join, carpometacarpal joints, extends 5th finger primarily at metacarpophalangeal joint, secondarily at interphalangeal joint

30
Q

Extensor Digiti Minimi Arterial Supply

A

radial recurrent, anterior and posterior interosseous arteries

31
Q

Extensor Indicis Origin

A

posterior surface of distal third of ulna and interosseous membrane

32
Q

Extensor Indicis Insertion

A

extensor expansion of 2nd finger

33
Q

Extensor Indicis Innervation

A

Posterior interosseous nerve (C7, C8), continuation of the deep branch of radial nerve

34
Q

Extensor Indicis Action

A

extends wrist joint, carpometacarpal joints, extends 2nd finger; helps extend hand at wrist

35
Q

Extensor Indicis Arterial Supply

A

anterior and posterior interosseous arteries

36
Q

Supinator Origin

A

lateral epicondyle of humerus, radial collateral and anular ligaments, supinator fossa, crest of ulnar

37
Q

Supinator Insertion

A

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

38
Q

Supinator Innervation

A

Deep branch of radial nerve (C7, C8)

39
Q

Supinator Action

A

supinates forearm, rotates radius to turn palm anteriorly or superiorly

40
Q

Supinator Arterial Supply

A

radial recurrent, posterior interosseous, and recurrent interosseous arteriesposterior surface of proximal halves of ulna, radius, and interosseous membrane

41
Q

Abductor Pollicis Longus Origin

A

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

42
Q

Abductor Pollicis Longus Insertion

A

base of 1st metacarpal

43
Q

Abductor Pollicis Longus Innervation

A

Posterior interosseous nerve (C7, C8), continuation of the deep branch of radial nerve

44
Q

Abductor Pollicis Longus Action

A

extends wrist joint, carpometacarpal joint, abducts thumb and extends thumb at carpometacarpal joint

45
Q

Abductor Pollicis Longus Arterial Supply

A

anterior and posterior interosseous arteries

46
Q

Extensor Pollicis Longus Origin

A

posterior surface of middle third of ulna and interosseous membrane

47
Q

Extensor Pollicis Longus Insertion

A

dorsal aspect of base of distal phalanx of thumb

48
Q

Extensor Pollicis Longus Innervation

A

posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

49
Q

Extensor Pollicis Longus Action

A

extends wrist joint, carpometacarpal joints, extends distal phalanx of thumb and interphalangeal joint, extends metacarpophalangeal and carpometacarpal joints

50
Q

Extensor Pollicis Longus Arterial Supply

A

anterior and posterior interosseous arteries

51
Q

Extensor Pollicis Brevis Origin

A

posterior surface of distal third of radius and interosseous membrane

52
Q

Extensor Pollicis Brevis Insertion

A

dorsal aspect of base of proximal phalanx of thumb

53
Q

Extensor Pollicis Brevis Innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

54
Q

Extensor Pollicis Brevis Action

A

extends wrist joint , carpometacarpal joints, extends proximal phalanx of thumb and metacarpophalangeal joint, extends carpometacarpal joint

55
Q

Extensor Pollicis Brevis Arterial Supply

A

anterior and posterior interosseous arteries

Anatomy AOINAS (4 decks)

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