Nerve Supply to the Face and Scalp
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A) Facial nerve
B) Trigeminal nerve
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Nerve Supply to the Face and Scalp
A) Facial nerve
- Comes through the stylomastoid foramen and appears posterior to the parotid gland.
- Enters the parotid gland to give rise to five terminal branches, the temporal, zygomatic, buccal, mandibular, and cervical branches that radiate forward in the face.
- Innervates the muscles of facial expression and sends the posterior auricular branch to the muscles of the auricle and the occipitalis muscle.
- Also innervates the digastric posterior belly and stylohyoid muscles.
- Provides sensory innervation to the skin of the face.
1) Ophthalmic division
- Innervates the area above the upper eyelid and dorsum of the nose.
- Supplies the face as the supraorbital, supratrochlear, infratrochlear, external nasal , and lacrimal nerves.
2) Maxillary division
- Innervates the face below the level of the eyes and above the upper lip.
- Supplies the face as the zygomaticofacial, zygomaticotemporal , and infraorbital nerves.
3) Mandibular division
- Innervates the face below the level of the lower lip.
- Supplies the face as the auriculotemporal, buccal, and mental nerves
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