The primary nerves in the mouth and jaw are branches of the Trigeminal Nerve (CN V), specifically the Maxillary Nerve (V2) and the Mandibular Nerve (V3).
Nerves of the Mouth and Jaw
Here's a breakdown of the nerves that provide sensation and motor function to the mouth and jaw:
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Maxillary Nerve (V2): This branch of the trigeminal nerve is responsible for sensory information from the upper part of the face, including the mouth. According to the reference, it controls "sensation in the lower eyelid, cheek, nostril, upper lip and upper gum."
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Mandibular Nerve (V3): This is another branch of the trigeminal nerve. The reference states this branch "controls sensations in the jaw, lower lip, lower gum and some of the muscles used for chewing". This nerve has both sensory and motor functions, enabling movement and sensation in the lower jaw and mouth.
Summary Table of Nerves in the Mouth and Jaw
| Nerve | Branch of | Function | Area of Innervation |
|---|---|---|---|
| Maxillary Nerve (V2) | Trigeminal Nerve | Sensory | Lower eyelid, cheek, nostril, upper lip, upper gum |
| Mandibular Nerve (V3) | Trigeminal Nerve | Sensory and Motor | Jaw, lower lip, lower gum, muscles for chewing |
