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2MB MSK Anatomy > Forearm (posterior) > Flashcards

Forearm (posterior) Flashcards

1
Q

List the posterior superficial muscles of the forearm

A 
Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
Extensor digitorum
Extensor digiti minimi
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2
Q

What is the origin and insertion of brachioradialis?

A

Common extensor tendon

Distal radius

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3
Q

What is the nerve + arterial supply to brachioradialis?

A

Radial nerve

Radial recurrent nerve

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4
Q

Which movements does brachioradialis enable?

A

Elbow: flexion
Forearm: supination

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5
Q

What is the origin and insertion of extensor carpi radialis longus?

A

Common extensor tendon

2nd metacarpal

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6
Q

What is the nerve + arterial supply to extensor carpi radialis longus?

A

Radial nerve

Radial artery

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7
Q

Which movements does extensor carpi radialis longus enable?

A

Wrist: extension, abduction

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8
Q

What is the origin and insertion of extensor carpi radialis brevis?

A

Common extensor tendon

3rd metacarpal

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9
Q

What is the nerve + arterial supply to extensor carpi radialis brevis?

A

Radial nerve

Radial artery

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10
Q

Which movements does extensor carpi radialis brevis enable?

A

Wrist: extension, abduction

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11
Q

What is the origin and insertion of extensor digitorum?

A

Common extensor tendon

Medial 4 digits (fingers)

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12
Q

What is the nerve + arterial supply to extensor digitorum?

A

Radial nerve

Posterior interosseous artery

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13
Q

Which movements does extensor digitorum enable?

A

Wrist: extension
Hand: extension
Fingers: extension

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14
Q

What is the origin and insertion of extensor digiti minimi?

A

Common extensor tendon

5th digit

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15
Q

What is the nerve + arterial supply to extensor digiti minimi?

A

Radial nerve

Posterior interosseous artery

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16
Q

Which movements does extensor digiti minimi enable?

A

Wrist: extension

Little finger: extension

17
Q

What is the origin and insertion of extensor carpi ulnaris?

A

Common extensor tendon

5th metacarpal

18
Q

What is the nerve + arterial supply to extensor carpi ulnaris?

A

Radial nerve

Ulnar artery

19
Q

Which movements does extensor carpi ulnaris enable?

A

Wrist: extension, adduction

20
Q

List the posterior deep muscles of the forearm

A 
Supinator
Extensor indicis
Extensor pollicis longus
Extensor pollicis brevis
Abductor pollicis longus
21
Q

What is the origin and insertion of supinator?

A

Shaft of radius + ulna, interosseous membrane

Proximal radius

22
Q

What is the nerve + arterial supply to supinator?

A

Radial nerve

Radial recurrent artery

23
Q

Which movements does supinator enable?

A

Forearm: supination

24
Q

What is the origin and insertion of extensor indicis?

A 
Interosseus membrane
2nd digit (index finger)
25
Q

What is the nerve + arterial supply to extensor indicis?

A

Posterior interosseous nerve

Posterior interosseous artery

26
Q

Which movements does extensor indicis enable?

A

Wrist: extension

Index finger: extension

27
Q

What is the origin and insertion of extensor pollicis longus?

A

Interosseous membrane

Distal phalanx of thumb

28
Q

What is the nerve + arterial supply to extensor pollicis longus?

A

Posterior interosseous nerve

Posterior interosseous artery

29
Q

Which movements does extensor pollicis longus enable?

A

Thumb: extension

30
Q

What is the origin and insertion of extensor pollicis brevis?

A

Interosseous membrane

Proximal phalanx of thumb

31
Q

What is the nerve + arterial supply to extensor pollicis brevis?

A

Posterior interosseous nerve

Posterior interosseous artery

32
Q

Which movements does extensor pollicis brevis enable?

A

Thumb: extension

33
Q

What is the origin and insertion of abductor pollicis longus?

A

Shaft of radius + ulna, interosseous membrane

1st metacarpal

34
Q

What is the nerve + arterial supply to abductor pollicis longus?

A

Posterior interosseous nerve

Posterior interosseous artery

35
Q

Which movements does abductor pollicis longus enable?

A

Thumb: extension, abduction

36
Q

What is the main nerve supply to the posterior compartment of the forearm?

A

Radial nerve

2MB MSK Anatomy (10 decks)

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