Facial Nerves Anatomy

It arises from the pons region of the brainstem posterior to the abducens nerve cn vi and anterior to the vestibulocochlear nerve cn viii. To innervate these muscles the facial nerve courses across the region that eventually becomes the middle ear.

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One of the branches provides motor signals to the stapedius muscle which is situated in the inner ear.

Facial nerves anatomy. Anatomy of the facial nerve the facial nerve is the seventh cranial nerve to exit the brain when counting from anterior to posterior. The nerve passes through the pyramidal eminence to supply the stapedius muscle in the middle ear. It is one of the longest cranial nerves extending from the brainstem to the terminal end branches which are located throughout the face.

In the newborn the facial nerve anatomy approximates that of an adult except for its location in the mastoid which is more superficial. By the eleventh week the facial nerve has arborized extensively. Facial nerve nerve that originates in the area of the brain called the pons and that has three types of nerve fibres.

The nerve to stapedius. All these muscles are derivatives of the second pharyngeal arch. 1 motor fibres to the superficial muscles of the face neck and scalp and to certain deep muscles known collectively as the muscles of facial expression.

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. Several structures of the facial nervedescribed as nuclei segments and branchesproduce the four components of facial nerve function. The first motor branch arises within the facial canal.

Branches of the facial nerve are responsible for innervating many of the muscles of the head and neck. The facial nerve has a complex anatomy. 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.

2 sensory fibres carrying impulses from the taste sensors in the front.

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