Podcast
Questions and Answers
Which nerve innervates the muscles in the posterior compartment of the forearm?
Which nerve innervates the muscles in the posterior compartment of the forearm?
- Median nerve
- Radial nerve (correct)
- Musculocutaneous nerve
- Ulnar nerve
How many muscles are there in the superficial layer of the posterior forearm?
How many muscles are there in the superficial layer of the posterior forearm?
- Seven (correct)
- Five
- Eight
- Six
Which muscle is a flexor at the elbow, despite having the characteristics of an extensor muscle?
Which muscle is a flexor at the elbow, despite having the characteristics of an extensor muscle?
- Extensor digitorum
- Brachioradialis (correct)
- Extensor carpi ulnaris
- Extensor carpi radialis brevis
Where are the radial artery and nerve sandwiched in the distal forearm?
Where are the radial artery and nerve sandwiched in the distal forearm?
Which muscles in the posterior forearm are situated on the lateral aspect and able to produce abduction as well as extension at the wrist?
Which muscles in the posterior forearm are situated on the lateral aspect and able to produce abduction as well as extension at the wrist?
Flashcards
Radial nerve
Radial nerve
Nerve that innervates muscles in the posterior compartment of the forearm.
Superficial layer muscles
Superficial layer muscles
There are seven muscles in the superficial layer of the posterior forearm.
Brachioradialis
Brachioradialis
A muscle that flexes the elbow but appears as an extensor muscle.
Radial artery and nerve location
Radial artery and nerve location
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Extensor carpi radialis
Extensor carpi radialis
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Study Notes
Posterior Forearm
- The posterior interosseous nerve innervates the muscles in the posterior compartment of the forearm.
- There are 3 muscles in the superficial layer of the posterior forearm.
Unique Muscle Characteristics
- Anconeus, a muscle in the posterior forearm, is a flexor at the elbow despite having the characteristics of an extensor muscle.
Radial Artery and Nerve
- The radial artery and nerve are situated between the tendons of the brachioradialis and extensor carpi radialis brevis muscles in the distal forearm.
Lateral Posterior Forearm Muscles
- The muscles in the posterior forearm that are situated on the lateral aspect and able to produce abduction as well as extension at the wrist are the abductor pollicis longus and extensor pollicis brevis.
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