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Definition. The motor portion, or the facial nerve proper, supplies all the facial musculature. The principal muscles are the frontalis, orbicularis oculi, buccinator, orbicularis oris, platysma, the posterior belly of the digastric, and the stapedius muscle.
22 maj 2015 · CN VII is a mixed cranial nerve with a complex anatomic course that consists of intraaxial, cisternal, canalicular, labyrinthine, tympanic, mastoid, and extracranial segments. Clinical patterns of facial palsy and associated symptoms help to localize lesions as supranuclear, nuclear, or infranuclear.
Cranial Nerve VII: Summary of the Four Components. Cranial nerve VII originates in four nuclei in the pons and medulla. These nuclei all combine to travel, via the internal auditory meatus, to the geniculate ganglion.
24 maj 2022 · Table of Contents. Structure. Function. Injury or Impairment. When to See a Provider. Frequently Asked Questions. Cranial nerve 7, which is also called the facial nerve, controls movement of the face, including the forehead, eyelids, cheeks, mouth, and jaw. The facial nerve can be damaged due to trauma, inflammation, infections, or disease.
24 lip 2023 · The facial nucleus is divided into a dorsal and ventral region. It contains the cell bodies of the facial nerve lower motor neurons (LMN). The dorsal region supplies innervation of the muscles of the upper face, whereas neurons in the ventral region innervate muscles of the lower face.
Cranial nerve seven (CN VII) is responsible for both efferent and afferent modalities in the head and neck including: Branchial motor fibers that innervate: muscles of "facial expression"
30 paź 2023 · The seventh cranial nerve (CN VII), the facial nerve, is responsible for providing motor innervation to these facial muscles, enabling you to smile or frown. In addition to motor fibers, this multitasking nerve also contains sensory and parasympathetic components.
