Muscles of Head and Neck GENERAL INFORMATION • Innervated by the facial nerve • Derivatives of the 2nd pharyngeal arch • Insert into the skin to provide movement • Most muscles of facial expression are localized around the facial orifices • There is no deep fascia along the face Muscles of head and neck can be divided into 5 groups: -Oral -Nasal -Orbital -Auricular -Scalp -Neck