ANAT 2646 Trigeminal and Facial Nerves

ANAT 2646 Trigeminal and Facial Nerves - digastric and...

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Trigeminal Nerve (GSA) 1st order - Trigeminal ganglion (semilunar, Gaussian) 2nd order - Trigeminal nuclei mesencephalic pontine (chief, principal) medullary 3rd order - VP nuclei of the thalamus
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Trigeminal Nerve (GSA) Divisions ophthalmic maxillary mandibular trigeminothalamic tract (contralateral) 3rd order neurons terminate in the sensory cortex
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Trigeminal Nerve (SVE) Mandibular division only !!! Innervates muscles of mastication, tensor tympani, tensor palati 1st order neuron is corticobulbar
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Trigeminal Nerve Cerebellum Motor cell groups (reflexes)
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Facial Nerve Motor Sensory Parasympathetic
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Facial Nerve Facial Motor Nucleus Innervates muscles of facial expression, platysma, stylohyoid, posterior belly of the
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Unformatted text preview: digastric, and stapedius • Upper motor neurons to the upper face are bilateral • to lower face - crossed Facial Nerve • Preganglionic parasympathetic (superior salivatory nucleus in the pons) • Submandibular ganglion – submandibular gland – lingual gland • Pterygopalatine ganglion – lacrimal galnd – nasal and oral mucosa Facial Nerve • Cutaneous to the ear – 1st order - geniculate ganglion2nd order spinal trigeminal nucleus Facial Nerve • Taste – anterior 2/3 of the tongue, floor of the mouth and palate – 1st order - geniculate ganglion – 2nd order - rostral NTS – 3rd order - VP thalamus – terminates in sensory cortex...
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