Final answer:
The trigeminal nerve, also known as cranial nerve V, can be divided into three major divisions: ophthalmic, maxillary, and mandibular. Each division serves different areas of the face and functions to provide sensory information for touch, temperature, and pain, as well as motor control for chewing and biting.
Step-by-step explanation:
The trigeminal nerve, also known as cranial nerve V, can be divided into three major divisions: ophthalmic, maxillary, and mandibular.
- The ophthalmic division (V1) provides sensory innervation to the forehead, upper eyelids, and nose.
- The maxillary division (V2) provides sensory innervation to the lower eyelids, cheeks, upper lip, and upper teeth.
- The mandibular division (V3) provides sensory innervation to the lower lip, chin, jaw, and tongue, as well as motor innervation to the muscles of mastication.
Each division of the trigeminal nerve serves different areas of the face and functions to provide sensory information for touch, temperature, and pain, as well as motor control for chewing and biting.