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My Gross Notes > Muscles of the posterior compartment forearm > Flashcards

Muscles of the posterior compartment forearm Flashcards

0
Q

Brachioradialis insertion

A

lateral surface of distal end of radius proximal to styloid process

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1
Q

Brachioradialis origin

superficial

A

Proximal two thirds of lateral supraepicondylar ridge of humerus

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2
Q

Brachioradialis innervation

A

radial nerve C5 C6 C&7

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3
Q

Main action of brachioradialis

A

Relative weak flexion of elbow joint

maximal when forearm is in midpronated

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4
Q

Extensor carpi radialis longus origin

superficial

A

Lateral supra-epicondylar ridge of humerus

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5
Q

insertion of extensor carpi radials longus

A

dorsal aspect of base of 2nd metacarpal

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6
Q

extensor carpi radialis longus innervation

A

radial nerve c6 C7

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7
Q

Extensor carpi radialis longus action

A

extend and abduct wrist joint

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8
Q

Action of extensor carpi radialis breves

A

activates during fist clenching

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9
Q

extensor carpi radialis breves origin

A

lateral epicondyle of humerus

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10
Q

extensor carpi radialis breves insertion

A

dorsal aspect of base third metacarpal

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11
Q

Innervation of Extensor carpi radialis breves

A

Deep branch of radial nerve C7 C8

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12
Q

Extensor digitorum Origin

A

Lateral epicondyle of humerus

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13
Q

Extensor Digitorum Insertion

A

Extensor expansion of 4 fingers

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14
Q

Innervation of Extensor Digitorum

A

Posterior interosseous nerve C7 C8

continuation of deep branch of radial nerve

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15
Q

Action Extensor digitorum

A

extends wrist
extends 4 finger primarily at metacarpopalangeal joint
secondarily at interphalangeal joint

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16
Q

Extensor Digiti minimi Origin

A

lateral epicondyle of humerus

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17
Q

Insertion of Extensor digiti Minimi

A

Extensor expansion of 5th finger

18
Q

innervation of Extensor Digiti Minimi

A

Posterior interosseous C7 C8

continuation of deep branch of radial nerve

19
Q

Action of Extensor Digiti Minimi

A

Extends wrist
Extends 5th finger primarily at the metacarpophalangeal joint
secondarily at the interphalangeal joint

20
Q

Extensor carpi ulnaris Origin

A

Lateral epicondyle of humerus

posterior border of ulna

21
Q

Insertion of Extensor Carpi Ulnaris

A

dorsal aspect of base of 5th metacarpal

22
Q

Innervation of Extensor Carpi Ulnaris

A

Posterior Interosseous C7 C8

Continuation of deep branch of radial nerve

23
Q

Action of extensor Carpi Ulnaris

A

Extends and adducts wrist joint

24
Q

Supinator Origin

Acronym RALSC

A

Lateral Epicondyle of humerus
Radial collateral and annular ligament
supinator fossa
crest of ulna

25
Q

Supinator Insertion

A

Lateral, posterior and anterior surface of proximal 3rd of radius

26
Q

Supinator innervation

A

Deep branch of radial nerve C7 C8

27
Q

Action of supinator

A

Supinates forearm

rotates radius to turn palm anteriorly or superiorly

28
Q

Abductor Pollicis longus Origin

A

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

29
Q

Insertion of abductor pollicis longus

A

Base of 1st metacarpal

30
Q

Innervation of Abductor Pollicis

A

Posterior Interosseous nerve C7 C8

continuation of deep branch of radial nerve

31
Q

Action of Abductor Pollicis longus

A

extend wrist

abduct thumb and extends it at carpometacarpal joint

32
Q

Extensor Pollicic longus origin

A

posterior surface of middle third of ulna and interosseous membrane

33
Q

Insertion of Extensor Policis longus

A

Dorsal aspect of base of distal phalanx of thumb

34
Q

Innervation of extensor pollicis longus

A

Posterior Interosseous nerve C7 C8

continuation of deep branch of radial nerve

35
Q

action of extensor Pollicis longus

A

Extends wrist joint
extends distal phalanx of thumb at interphalangeal joint
extends metacarpophalangeal and carpometacarpal joint

36
Q

Extensor Pollicis Breves Origin

A

Posterior surface of distal third of radius and interosseous membrane

37
Q

Insertion of extensor pollicis breves

A

Dorsal aspect of base of proximal phalanx of thumb

38
Q

Innervation of extensor Pollicis breves

A

Posterior Interosseous nerve C7 C8

continuation of deep branch of radial nerve

39
Q

Action of extensor Pollicis breves

A

extends wrist
extends proximal phalanx of thumb at
metacarpophalangeal and metacarpacarpal joints

40
Q

Extensor indicis origin

A

posterior surface of distal third ulna and interosseous membrane

41
Q

Extensor indicis insertion

A

extensor expansion of 2nd finger

42
Q

Innervation of extensor indicis

A

Posterior Interosseous nerve C7 C8

continuation of deep branch of radial nerve

43
Q

Extensor indicis action

A

Extends wrist
extends 2nd finger
helps extend hand at wrist

My Gross Notes (12 decks)

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