Muscles that rotate the forearm

Question 1

What muscles in the forearm cause pronation?

Answer 1

Pronator teres and pronator quadratus

Question 2

What muscles cause supination?

Answer 2

Biceps brachii and the supinator muscle

Question 3

Points of attachment of the Pronator Teres

Answer 3

Medial epicondyle on the humerus to the Lateral radius, distal to the point of insertion of the supinator

Question 4

Points of attachment of the Pronator quadratus

Answer 4

The anterior surface of the distal ulna to the anterior surface of the distal radius

Question 5

Points of attachment of the Supinator muscle

Answer 5

Lateral epicondyle and the anular ligament and the supinator crest. Inserts on the lateral third of the proximal radius (Just above the point of insertion of pronator teres)

Question 6

What nerve runs throughout the supinator

Answer 6

The deep branch of the brachial nerve

Question 7

Points of attachment of the Biceps brachii and the action of this muscle at the elbow joint

Answer 7

Radial tuberosity, causes supination (At the shoulder, attaches to the supraglenoid tubercle (Long head) and the coracoid process (Short head))