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Posterior Forearm Flashcards

1
Q

What muscles make up the posterior forearm?

A 
Brachoradialis
Extensor carpi radialis
Extensor carpi ulnaris
Anconeus
Extensor digitorum profundus
Extensor digiti minimi
Supinator
Extensor pollucis longus
Extensor pollucis brevis
Extensor indicus proprius 
Abductor pollucis longus
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2
Q

Which muscles make up the superficial part of the posterior forearm?

A 
Brachoradialis
Extensor carpi radialis
Extensor carpi ulnaris
Anconeus
Extensor digitorum profundus
Extensor digiti minimi
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3
Q

Which muscles make up the deep part of the posterior forearm?

A 
Supinator
Extensor pollucis longus
Extensor pollucis brevis
Extensor indicus proprius 
Abductor pollucis longus
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4
Q

Which nerve innervates the muscles of the posterior forearm?

A

Radial nerve

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5
Q

What is the origin of brachoradialis?

A

Lateral supracondylar ridge

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6
Q

What is the insertion of brachoradialis?

A

Distal radialis

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7
Q

What is the action of brachoradialis?

A

Flex elbow

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8
Q

What is the innervation of brachoradialis?

A

Radial nerve

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9
Q

What is the origin of extensor carpi radialis?

A

Longus - supracondylar ridge

Brevis - lateral epicondyle

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10
Q

What is the insertion of extensor carpi radialis?

A

Tendon -> metacarpal 1+2

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11
Q

What is the action of extensor carpi radialis?

A

Extend wrist

Abduct wrist

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12
Q

What is the innervation of extensor carpi radialis?

A

Radial nerve

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13
Q

What is the origin of extensor carpi ulnaris?

A

Lateral epicondyle

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14
Q

What is the insertion of extensor carpi ulnaris?

A

Metacarpal 5

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15
Q

What is the action of extensor carpi ulnaris?

A

Extend wrist

Adduct wrist

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16
Q

What is the innervation of extensor carpi ulnaris?

A

Radial nerve

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17
Q

What is the origin of anconeus?

A

Lateral epicondyle

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18
Q

What is the insertion of anconeus?

A

Posterior + lateral olecranon

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19
Q

What is the action of anconeus?

A

Extend elbow

Abduct ulna in pronation

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20
Q

What is the innervation of anconeus?

A

Radial nerve

21
Q

What is the origin of extensor digitorum profundus?

A

Lateral epicondyle

22
Q

What is the insertion of extensor digitorum profundus?

A

Tendons -> extensor hood

23
Q

What is the action of extensor digitorum profundus?

A

Extend MCPJ

Extend PIPJ

24
Q

What is the innervation of extensor digitorum profundus?

A

Radial nerve

25
What is the origin of extensor digiti minimi?
Lateral epidcondyle
26
What is the insertion of extensor digiti minimi?
With EDP tendon onto extensor hood of little finger
27
What is the action of extensor digiti minimi?
Extend little finger
28
What is the innervation of extensor digiti minimi?
Radial nerve
29
What is the origin of supinator?
Lateral epicondyle | Posterior ulna
30
What is the insertion of supinator?
Posterior radius
31
What is the action of supinator?
Supinate
32
What is the innervation of supinator?
Radial nerve
33
What is the origin of extensor pollucis longus?
Posterior ulna + IO membrane
34
What is the insertion of extensor pollucis longus?
Distal phalanx of thumb
35
What is the action of extensor pollucus longus?
Extend CMCJ Extend MCPJ Extend IPJ
36
What is the innervation of extensor pollucis longus?
Radial nerve
37
What is the origin of extensor pollucis brevis?
Posterior radius + IO membrane
38
What is the insertion of extensor pollucis brevis?
Proximal phalanx of thumb
39
What is the action of extensor pollucis brevis?
Extend CMCJ | Extend MCPJ
40
What is the innervation of extensor pollucis brevis?
Radial nerve
41
What is the origin of extensor indicus proprius?
Posterior ulna + IO membrane
42
What is the insertion of extensor indicus proprius?
Extensor hood of index finger
43
What is the action of extensor indicus proprius?
Extend index finger
44
What is the innervation of extensor indicus proprius?
Radial nerve
45
What is the origin of abductor pollucis longus?
IO membrane | Posterior radius + ulna
46
What is the insertion of abductor pollucis longus?
Lateral base of metacarpal 1
47
What is the action of abductor pollucis longus?
Abduct thumb
48
What is the innervation of abductor pollucis longus?
Radial nerve

Upper Limb (12 decks)

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