Posterior Forearm And Hand

Question 1

What innervates the posterior forearm?

Answer 1

Radial nerve

Question 2

What are the superficial muscles of the posterior forearm?

Answer 2

Brachioradialis and anconeus, extensor carpi radialis longus and extensor carpi radialis brevis

Question 3

What are the actions of the superficial muscles?

Answer 3

BR: elbow flexion
Anconeus: elbow extension
Extensor carpi radialis longus/brevis: Abduction and extension

Question 4

What are the other superficial muscles?

Answer 4

Extensor digitorum, extensor carpi ulnaris and extensor digiti minimi

Question 5

What are the actions of ED, ECU and EDM?

Answer 5

ED: extension of wrist and fingers
EDM: extension of wrist and fingers
ECU: extension of wrist and adduction of wrist

Question 6

What are the deep muscles?

Answer 6

Extensor pollicis longus, extensor pollicis brevis, extensor indicis, supinator and abductor pollicis longus

Question 7

What are the actions of the deeps muscles?

Answer 7

Supinator: supination
Extensor indicis: extension of index finger
The rest is thumb extension and abduction

Question 8

What gives sensory innervation to brachioradialis?

Answer 8

Superficial radial nerve

Question 9

Which artery supplies the antero- and postero-lateral muscles?

Answer 9

Radial artery

Question 10

Which artery supplies the postero- and antero-medial muscles?

Answer 10

Ulnar artery

Question 11

What travels within the anatomical snuff box?

Answer 11

Superficial radial artery and radial artery (deep)