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ESA2 > MSK - Muscles of the Forearm > Flashcards

MSK - Muscles of the Forearm Flashcards

0
Q

What is the muscle in the second layer of the anterior forearm?

A

Flexor digitorum superficialisis

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1
Q

What are the 4 superficial anterior forearm muscles?

From lateral to medial

A

Pronator Teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

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2
Q

What are the 3 deep muscles in the anterior forearm?

A

Flexor pollicus longus
Flexor digitorum profundus
Pronator quadratus

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3
Q

What nerves supply the anterior forearm compartment

A

The median nerve - all except FCU and FDP
The ulnar nerve - FCU and FDP
The interosseous nerve (branch from the median) supplies the deepest layer muscles

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4
Q

What are the 6 superficial muscles on the posterior forearm?

From medial to lateral

A 
Brachioradialis 
Extensor carpi radialis longus 
Extensor carpi radialis brevis
Extensor digitorum 
Extensor digit minimi 
Extensor carpi ulnaris
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5
Q

What are the 5 deep muscles of the posterior forearm?

A 
Lateral to medial 
Supinator 
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis 
Extensor indicis
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6
Q

What nerve supplies muscles in the posterior forearm?

A

The radial nerve

Usually the deep branch

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7
Q

What is the action of the pronator Teres?

A

Pronation of forearm

Flexion of elbow

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8
Q

What is the action of the superficial anterior muscles?

A

Flexion of the wrist

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9
Q

What is the action of the flexor digitorum superficialis?

A

Flexes the middle phalanges

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10
Q

What is the action of the flexor digitorum profundus?

A

This flexes the distal phalanges

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11
Q

What is the action of the flexor pollicis longus?

A

Flexes the thumb

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12
Q

What do the extensor radialis and extensor ulnaris do?

A

Extend the wrist

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13
Q

What is the action of the extensor digitorum?

A

Extends the medial digits

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14
Q

What is the action of the extensor digit minimi?

A

Extends the little finger

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15
Q

What digit do the pollicis muscles control?

A

Thumb (1st digit)

16
Q

Which arteries supply the forearm?

A

Radial and ulnar arteries

17
Q

Describe the arterial course from the top of the arm

A

Axillary artery - brachial artery - radial and ulnar
Radial runs laterally towards the distal forearm
The ulnar runs lateral to the FCU tendon runs deep into most anterior muscles - finishes in medial side of wrist

18
Q

Describe the nervous supply to the forearm

A

The median nerve runs between the FDS FDP
The ulnar nerve passes posterior to the medial epicondyle descends between the FCU and FDP
The radial nerve runs posteriorly splits into superficial and deep
Deep winds round radius neck and supplies posterior compartment.

ESA2 (38 decks)

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