Question

what muscle of the forearm originates at the distal shaft of the ulna?
a.) brachialis
b.) pronator teres
c.) pronator quadratus
d.) brachioradialis

Explanation:

• Brachialis: Originates from the anterior surface of the humerus.
• Pronator Teres: Originates from the medial epicondyle of the humerus and the coronoid process of the ulna.
• Pronator Quadratus: Originates from the distal shaft of the ulna.
• Brachioradialis: Originates from the lateral supracondylar ridge of the humerus.

Answer:

C. Pronator Quadratus