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Visceral Motor Component

Visceral Motor Component - Cranial Nerves Visceral Motor...

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Cranial Nerves Visceral Motor Component * Parasympathetic component of the facial nerve consists of efferent fibers which stimulate secretion from the submandibular , sublingual , and lacrimal glands , as well as the mucous membranes of the nasopharynx and hard and soft palates. * The visceral motor component originates in the caudal pons just below the facial nucleus in a group of cells known as the superior salivatory nucleus. * Upon emerging from the ventrolateral aspect of the caudal border of the pons, all of the components of CN VII enter the internal auditory meatus along with the fibers of CN VIII (vestibulocochlear nerve). * Within the facial canal the visceral motor fibers divide into two groups to become the greater petrosal nerve and the chorda tympani : * The greater petrosal nerve supplies the lacrimal, nasal, and palatine glands. * The chorda tympani follows the lingual nerve to the submandibular ganglia then postganglionic fibers supplies the submandibular and sublingual glands .
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