Anatomy of upper facial muscles

This video is part of the playlist Essential Anatomy for Botox Facial Injections : After watching this video it is expected that you will be able to Outline muscle groups of the face: muscles of mastication and muscles of facial expression. Discuss the functional groups of muscles of facial expression: dilator and sphincter mechanisms of the orifices of the face. Summarize the structure of the upper eyelid in relation to the br, br,