Muscles of facial expression

The video tutorial explores the muscles of facial expression, explaining how they attach to the skin and contribute to various facial expressions. It covers specific muscles such as the frontalis, orbicularis oculi, nasalis, zygomaticus, buccinator, orbicularis oris, and platysma, detailing their functions and anatomical positions. The tutorial also touches on the embryonic development of these muscles and their clinical significance.

Explain how the buccinator muscle contributes to facial expression.

What is the function of the orbicularis oris muscle?