Trigeminal Nerve: Functions, Branches and Clinical Implications

what is the function of CN V (trigeminal)?

muscles of masstication (somatic motor)head neck sinuses (general sensory)

The trigeminal nerve (CN V) is the fifth of the twelve cranial nerves in the body. It has three major branches, each of which has a specific function:

1. Ophthalmic nerve (V1): The ophthalmic nerve is responsible for providing sensation to the forehead, eyelids, and nose. It also helps control some of the muscles involved in eye movement.

2. Maxillary nerve (V2): The maxillary nerve provides sensation to the upper jaw, cheeks, and upper lip. It also innervates the maxillary teeth and the overlying gum tissue.

3. Mandibular nerve (V3): The mandibular nerve is responsible for providing sensation to the lower jaw, tongue, and lower lip. It also controls the muscles involved in chewing.

Overall, the trigeminal nerve plays a crucial role in providing sensory information from the face and controlling the muscles involved in facial expression, chewing, and swallowing. Dysfunction of the trigeminal nerve can lead to a variety of clinical problems, such as trigeminal neuralgia, which is characterized by intense facial pain.

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Optimizing Eye Movement: Function and Role of the Abducens Nerve (CN VI)

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