tongue, buccal and and those controlling mandible....muscles of the lower face. mastication = the process of chewing
The cranial nerve that supplies motor action to the muscles of mastication is the mandibular branch of the trigeminal nerve, also known as cranial nerve V3. This nerve innervates the major muscles involved in chewing, including the masseter, temporalis, and pterygoid muscles. It plays a crucial role in the process of mastication by facilitating jaw movement.
Cranial Nerve V
It seems there might be a typographical error in your question. If you're referring to the nerves involved in mastication (chewing), the primary nerve responsible is the mandibular branch of the trigeminal nerve (cranial nerve V3). It innervates the muscles of mastication, enabling the jaw to move and perform chewing actions. If you meant something else, please clarify!
The cranial nerve responsible for moving the cheek muscles is cranial nerve V (the trigeminal nerve). However, cranial nerve IX (glossopharyngeal) and cranial nerve XII (hypoglossal) are also involved in moving the tongue, the throat for swallowing and the muscles along the floor of the jaw.
The trigeminal nerve (cranial nerve V) is of particular interest to dentists and dental patients because it innervates the muscles of mastication and is responsible for providing sensation to the face, mouth, and teeth. Issues with the trigeminal nerve can lead to problems with chewing, swallowing, and feeling in the face and mouth.
The cranial nerve that innervates the ear is the vestibulocochlear nerve (CN VIII). It has two branches: the vestibular nerve that controls balance and the cochlear nerve that controls hearing.
The muscles of mastication are primarily innervated by the mandibular branch of the trigeminal nerve, also known as cranial nerve V3. This nerve supplies the muscles responsible for chewing, including the masseter, temporalis, and pterygoid muscles. These muscles play a crucial role in the process of biting and grinding food.
The spinal accessory nerve (cranial nerve XI) is involved in hyperextending and flexing the neck. This nerve innervates the trapezius and sternocleidomastoid muscles, which are involved in these movements.
The trigeminal nerve (cranial nerve V) is a mixed cranial nerve that contains both sensory and motor fibers. It is responsible for sensation in the face and motor functions such as biting and chewing. The sensory component detects touch, pain, and temperature from the face, while the motor component innervates the muscles of mastication. Other mixed cranial nerves include the facial nerve (VII), glossopharyngeal nerve (IX), and vagus nerve (X).
The vestibulocochlear nerve innervates the ear.
The trigeminal nerve, the fifth cranial nerve, innervates the face, providing sensation to the skin, mucous membranes, and sinuses. It has three major branches: the ophthalmic, maxillary, and mandibular nerves, which respectively supply the forehead, upper jaw, and lower jaw areas. Additionally, the mandibular branch also innervates muscles involved in mastication. Overall, the trigeminal nerve plays a crucial role in both sensory perception and motor functions of the face.
The optic nerve (purely sensory; carry afferent impulses for vision) Oculomotor (innervates four of the extrinsic eye muscles) Trochlear (innervates an extrinsic eye muscle that hooks through a pulley-shaped ligament in the orbit) Abducens (innervates the muscle that turns abducts the eyeball)