Upper Limb 3 Station 1 - Anterior Forearm: Superficial Muscles

Question 1

Muscles of front of the forearm do what movement on what joints?

Answer 1

Flexors of the wrist Pronation of the forearm

Question 2

What 3 groups are the muscles of the forearm arranged into?

Answer 2

Superficial, intermediate and deep

Question 3

What muscles are in the superficial group (4)? Where do all 4 of these muscles originate from?

Answer 3

Pronator teres Palmaris longus Flexor carpi radialis Flexor carpi ulnaris - Originate from a common tendon to the medial epicondyle of humerus

Question 4

Answer 4

Question 5

Action and innervation of pronator teres?

Answer 5

Pronation of forearm

Median nerve

Question 6

Main action of flexor carpi radialis, FC ulnaris and palmaris longus?

Answer 6

Flex wrist joint

Question 7

Aside from flexion, which one of the 4 superficial muscles adducts the wrist ?

Answer 7

FC ulnaris

Question 8

Aside from flexion, which one of the 4 superficial muscles abducts the wrist ?

Answer 8

FC radialis

Question 9

Does the median nerve innervate all 4 of the superfical muscles of the anterior forearm?

Answer 9

No - only flexor carpi radialis, pronator teres and palmaris longus

Flexor carpi ulnaris is supplies by the ulnar nerve

Question 10

What joint does the brachioradialis muscle act on?

Answer 10

Radio-ulnar joint

Question 11

Action of brachioradialis?

Answer 11

Flexion at elbow

Question 12

What nerve innervates the brachioradialis?

Answer 12

Radial nerve

Question 13

What is the brachioradialis a major exception for, as in what rule is it “breaking”?

Answer 13

That all flexors lie in the anterior compartment of the forearm

And that the radial nerve only supplies extensor muscles, since it is a flexor