Flexor pollicis longus muscle

The video tutorial discusses the flexor pollicis longus muscle, one of the three deep flexors of the forearm. It covers the muscle's location, origin, insertion, nerve supply, and functions. The flexor pollicis longus originates from the anterior surface of the radius and sometimes the medial epicondyle of the humerus. Its tendon runs through the carpal tunnel and inserts at the distal phalanx of the thumb. The muscle is innervated by the median nerve, specifically the anterior interosseous nerve. It is responsible for thumb flexion at the MCP and DIP joints, opposition at the saddle joint, and can flex and abduct the wrist joint when the thumb is fixed.

What are the three deep flexors of the forearm?

What is the origin of the flexor pollicis longus muscle?

Which nerve supplies the flexor pollicis longus muscle?

Describe the function of the flexor pollicis longus muscle.

Explain the role of the flexor pollicis longus in wrist movement.