The Facial Nerve Anatomy

The brainstem nuclei of the facial nerve are part of the central nervous system. The nerve then passes through the tympanic segment of facial canal which runs horizontally backward along the medial wall of the middle ear till it reaches the junction of medial and posterior wall of middle ear.

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This is an exit located just posterior to the styloid process of the temporal bone.

The facial nerve anatomy. The facial nerve passes through this part to reach the medial wall of middle ear where it bends external genu location of geniculate ganglion sharply backwards. 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. One of the branches provides motor signals to the stapedius muscle which is situated in the inner ear.

The greater petrosal nerve serves the lacrimal gland the gland that produces tears and the nasal cavity as well sphenoid frontal maxillary and ethmoid sinuses cavities in the skull. This is an exit located just posterior to the styloid process of the temporal bone. The facial nerve or cranial nerve cn vii is the nerve of facial expression.

The facial nerve emerges at the pontine level of the brainstem. Minor differences in the structure and location of the branches of. It arises from the pons region of the brainstem posterior to the abducens nerve cn vi and anterior to the vestibulocochlear nerve cn viii.

The facial nerve then exits the facial canal and the cranium via the stylomastoid foramen. Anatomy of the facial nerve the facial nerve is the seventh cranial nerve to exit the brain when counting from anterior to posterior.

Facial Nerve Five Motor Branches The Studental