Posterior Forearm Muscles | Deep Layer

This video tutorial explores the deep layer of muscles in the posterior compartment of the forearm, focusing on the abductor pollicis longus, extensor indicus, extensor pollicis longus and brevis, and the supinator muscle. It covers their origins, insertions, functions, and innervations, providing a detailed understanding of their roles in thumb and finger movements.

What does the term 'pollicis' refer to in the context of muscle names?

What is the function of the abductor pollicis longus muscle?

Describe the origin and insertion points of the extensor indicus muscle.

How do the extensor pollicis longus and extensor pollicis brevis differ in their insertions?

Describe the action of the extensor pollicis longus at the interphalangeal joint.

What is the role of the supinator muscle in forearm movement?

Explain the innervation differences between the supinator and the other deep posterior compartment muscles.