Posterior compartment- radialis muscles

Question 1

Insertion of brachioradialis?

Answer 1

Styloid process of the radius

Question 2

Innervation of brachioradialis?

Answer 2

Radial n.

C5, C6

Question 3

Action of brachioradialis?

Answer 3

Elbow: flexion
Forearm: semipronation

Question 4

Origin of brachioradialis?

Answer 4

Distal humerus (distal surface), lateral intermuscular septum

Question 5

Origin of extensor carpi radialis longus?

Answer 5

Lateral supracondylar ride of distal humerus, lateral intermuscular septum

Question 6

Insertion of extensor carpi radialis longus?

Answer 6

2n metacarpal bone (at base)

Question 7

Innervation of extensor carpi radialis longus?

Answer 7

Radial n.

C6, C7

Question 8

Action of extensor carpi radialis longus AND extensor carpi radialis brevis?

Answer 8

Elbow: weak flexion
Wrist: extension and abduction

Question 9

Origin of extensor carpi radialis brevis?

Answer 9

Lateral epicondyle of humerus

Question 10

Insertion of extensor carpi radialis brevis?

Answer 10

3rd metacarpal (at base)

Question 11

Innervation of extensor carpi radialis brevis?

Answer 11

Radial n.

C7, C8