The facial nerve is the seventh cranial nerve, or simply CN VII.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. The nerves typically travels from the pons through the facial canal in the temporal bone and exits the skull at the stylomastoid foramen. It is the termination of the facial canal, and transmits the facial nerve and stylomastoid artery. Clinical relevance. Bell's palsy can result from inflammation of the facial nerve where it leaves the skull at the stylomastoid foramen. Patients with Bell's palsy appear with facial drooping on the affected side.FMA: 55816.
The facial nerve then exits the facial canal (and the cranium) via the stylomastoid foramen. This is an exit located just posterior to the styloid process of the temporal bone. Extracranial. After exiting the skull, the facial nerve turns superiorly to run just anterior to the outer ear.4.8/5. The facial nerve exits the skull from the stylomastoid foramen and passes obliquely inferiorly and laterally until it enters the parotid gland. The common facial divisions of the nerve are the temporal, zygomatic, buccal, marginal mandibular, and cervical divisions.
Sep 20, 2017 · The facial nerve exits skull via stylomastoid foramen; nearby, it gives off the posterior auricular nerve which is meant to supply the occipital belly of the occipitofrontalis muscle and some of the auricular muscles, and nerves to the posterior belly of the digastric and the stylohyoid.Clinical relations: Palsy, inferior medial pontine syndome. The facial nerve is one of the key cranial nerves with a complex and broad range of functions.. Although at first glance it is the motor nerve of facial expression which begins as a trunk and emerges from the parotid gland as five branches (see facial nerve branches mnemonic), it has taste and parasympathetic fibers that relay in a complex manner.. The facial nerve is the only cranial nerve.
Jul 29, 2013 · The facial nerve exits the cranium at the stylomastoid foramen just inferior and posterior to the auricle. It has the longest path within a bony canal of any nerve in the body. Upon its exit of the cranium, the nerve courses within the parotid gland in a superior medial direction.Author: Will Schleicher, Michael Feldman, Jennifer Rhodes. Jean-Pierre Barral, Alain Croibier, in Manual Therapy for the Cranial Nerves, 2009. 19.3.2 Stylomastoid foramen Anatomy. The trunk of the facial nerve passes through the stylomastoid foramen.It is located between the styloid and mastoid processes (at the inferior surface of the temporal bone, between the tympanic bone in front and the petrous mass behind).