Pronator quadratus muscle

The video tutorial discusses the pronator quadratus muscle, one of the three deep flexors of the forearm. It is located at the ventral forearm and is easy to palpate due to its proximity to the radius and ulna. The muscle originates from the distal ulna and attaches to the radius, giving it a square shape. It is innervated by the median nerve, specifically the anterior interosseous nerve. The pronator quadratus is responsible for pronation at the radial ulnar joint. The video encourages viewers to explore more anatomy resources on Kenhub.

Which muscle group does the pronator quadratus belong to?

• Extensors of the forearm

• Deep flexors of the forearm

• Superficial flexors of the forearm

• Abductors of the forearm

Where does the pronator quadratus muscle originate?

• Proximal end of the ulna

• Proximal end of the radius

• Distal end of the radius

• Distal end of the ulna

Which nerve is responsible for the innervation of the pronator quadratus?

• Musculocutaneous nerve

• Radial nerve

• Ulnar nerve

• Median nerve

What is the primary function of the pronator quadratus muscle?

• Flexion of the wrist

• Extension of the fingers

• Pronation of the forearm

• Supination of the forearm

What shape is the pronator quadratus muscle often compared to?

• Rectangular

• Square

• Triangular

• Circular