Components of the Muscular System in the Head

Description

Bisecting the head and upper torso, the right half retains the external facial surface while the left half exposes the layered skeletal musculature of the face, orbit, jaw, and anterolateral neck. Superficial facial muscles such as orbicularis oculi and orbicularis oris sit immediately deep to the dermis, while the zygomaticus major and minor run obliquely from the zygomatic bone inferomedially toward the modiolus at the lateral oral commissure. Deeper planes logically include buccinator along the cheek, masseter lateral to the mandibular ramus, and temporalis superior to the zygomatic arch, with the sternocleidomastoid descending inferolaterally from the mastoid process toward the sternum and clavicle; color-coded arteries and veins track alongside yellow peripheral nerves across the face and into the neck. Half-and-half realism. A clear teaching device. Facial expression and mastication depend on different motor supplies, and this split view makes that distinction easy to teach: muscles of facial expression cluster around the palpebral fissure and oral fissure and follow branches of the facial nerve (CN VII), while temporalis and masseter align with the mandibular division of the trigeminal nerve (V3). Clinically, the relationships matter when localizing a Bell palsy pattern, planning a preauricular or submandibular approach that must respect facial nerve branches, or explaining why temporomandibular disorders can refer pain to the temple and orbit. The inclusion of orbital musculature and nerve pathways supports discussion of extraocular movement deficits and common cranial neuropathies. Use this artwork in head and neck anatomy labs, dental and maxillofacial surgery teaching files, ENT textbooks, and patient-facing materials that contrast surface landmarks with the underlying muscle planes. It also fits well in lectures on cranial nerve motor function, facial trauma, and cosmetic injection planning where muscle boundaries guide safe placement. Anatomical accuracy verified by SciePro's Medical Advisory Board.