Which nerve provides motor innervation to the face?

The facial nerve (cranial nerve VII) supplies motor innervation to the face. It exits the skull and branches into five terminal branches to control the muscles of facial expression.

What are the five terminal branches of the facial nerve?

After entering the parotid gland, the facial nerve divides into five branches: Temporal, Zygomatic, Buccal, Marginal mandibular, and Cervical. These supply the muscles of facial expression.

What nerve is responsible for sensory innervation of the face?

The trigeminal nerve (cranial nerve V) provides sensory innervation to the face. It is divided into three divisions: ophthalmic (V1), maxillary (V2), and mandibular (V3), each covering different facial regions.

How is the sensory innervation of the face divided by the trigeminal nerve?

The trigeminal nerve divides the face into three sensory regions: Ophthalmic (V1) for the upper third, Maxillary (V2) for the middle third, and Mandibular (V3) for the lower third.

What is Bell's palsy and how does it relate to facial nerve anatomy?

Bell's palsy is a lower motor neuron paralysis caused by compression of the facial nerve. It leads to symptoms like facial asymmetry, inability to close the eye, and drooling due to impaired motor function of facial muscles.

What is trigeminal neuralgia and which nerve division is commonly affected?

Trigeminal neuralgia is a condition characterized by sudden, severe pain in the trigeminal nerve. It often affects the maxillary division (V2), causing intense facial pain.

Which nerve supplies the area over the angle of the mandible?

The area over the angle of the mandible is supplied by the great auricular nerve, which originates from spinal nerves C2 and C3, not the trigeminal nerve.

Face Nerve Supply – Facial (CN VII) & Trigeminal (CN V)

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