All orofacial muscles are composed of striated muscle fibers, which are characterized by their voluntary control and distinct cross-striations visible under a microscope. These muscles enable precise and coordinated movements essential for functions such as mastication, facial expression, speech, and swallowing. Unlike smooth or cardiac muscles, orofacial muscles require fine motor control, which is facilitated by their somatic innervation. Understanding that these muscles are striated is crucial during surgical procedures in the head and neck region to avoid damage to motor nerves controlling facial expressions and mastication. This classification guides surgeons in preserving muscle function and planning reconstructive surgeries.

Reference: Gray's Anatomy, Standring S., 42nd Edition.