Muscles of the face and neck The muscles of the facial expression are a group of approximately 20 superficial skeletal muscles of the face and scalp which originate from the bony and fibrous structures of the skull and insert into the skin. These attachments give them an important role in showing emotions through facial expressions. The muscles of the neck are muscles that cover the area of the neck. These muscles are mainly responsible for the movement of the head in all directions. They consis