Facial Anatomy Nerves

Intracranial the course of the nerve through the cranial cavity and the cranium itself. It extends superiorly up to the hair line inferiorly up to the chin and base of the mandible and on every side up to the auricle and is the front aspect of the head.

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The facial nerve is also known as the seventh cranial nerve cn7.

Facial anatomy nerves. There are many branches which transmit a combination of sensory motor and parasympathetic fibres. The face possesses eyes nose and mouth. At this point the two roots fuse to form the facial nerve and this is the location of a nerve ganglion.

It emerges from the pons of the brainstem controls the muscles of facial expression and functions in the conveyance of taste sensations from the anterior two thirds of the tongue. It conveys some sensory information from the tongue and the interior of the mouth. The facial nerve is the nerve associated with the second pharyngeal arch.

Anatomically the course of the facial nerve can be divided into two parts. The face and the scalp have the brow in common. The specific bones and muscles derived from the second pharyngeal arch are shown below.

These root nerves extend to an internal opening in the bones of the skull known as the acoustic meatus and pass through into the facial canal passing very close to the inner ear. The facial nerve is one of a group of nerves called the cranial nerves cn twelve pairs of nerves that with the exception of the spinal accessory nerve cn xi originate in the brain and contribute to the peripheral nervous system pns. The course of the facial nerve is very complex.

The facial nerve has a complex anatomy. The nerve extends from the brain stem at the pons and the medulla. Enhancement of the other segments of the facial nerve and other cranial nerves is considered pathologic.

Several structures of the facial nervedescribed as nuclei segments and branchesproduce the four components of facial nerve function. The nerves typically travels from the pons through the facial canal in the temporal bone and exits the skull at the stylomastoid foramen. The facial nerve or cranial nerve cn vii is the nerve of facial expression.

The facial nerve is the only cranial nerve that may show normal post contrast enhancement although this applies only to the labyrinthine segment up to the stylomastoid foramen. Specifically cn7 serves about two thirds of the tongues tip. The pathways of the facial nerve are variable and knowledge of the key intratemporal and extratemporal landmarks is essential for accurate physical diagnosis and safe and effective surgical intervention in the head and neck.

The facial nerve is the seventh cranial nerve or simply cn vii. It arises from the brainstem from an area posterior to the cranial nerve vi and anterior to cranial nerve viii. It is one of the longest cranial nerves extending from the brainstem to the terminal end branches which are located throughout the face.

This nerve performs two major functions.

Names Functions And Locations Of Cranial Nerves