Anatomy 337 Module 27

Anatomy 337 Module 27
modality of CN I - -special sensory (smell)

- Where do olfactory nerves synapse? - -olfactory bulb

- CN II modality - -special sensory (vision)

- CN III modality - -somatic and visceral motor

- action of CN III - -innervation of superior rectus, inferior rectus, medial
rectus, and inferior oblique. innervates levator palpebrae superioris and
sphincter pupillae and ciliary muscle

- Where do preganglionic parasympathetic fibers of CN III synapse? - -ciliary
ganglion

- trochlear nerve modality - -somatic motor

- CN V modality - -somatic motor and somatic sensory

- CN V function - -innervation of mastication muscles, mylehyoid, anterior
belly of digastric, tensor tympani and tensor veli palatini muscles. sensation
to face.

- CN VI modality - -somatic motor

- CN VII modality - -special sensory, visceral motor, visceral sensory,
somatic sensory, somatic motor

- CN VII function - -taste (anterior 2/3 of tongue), muscles of facial
expression, innervation of submandibular and sublingual glands

- skull passageway of CN VII - -enters through internal acoustic meatus.
portion that innervates facial muscles leaves through stylomastoid foramen

- CN VIII modality - -special sensory

- CN IX modality - -special sensory, somatic sensory, visceral motor, visceral
sensory, somatic motor

- CN IX function - -taste from posterior 1/3 of tongue, pharynx sensations,
parotid gland secretion, monitors oxygen and carbon dioxide levels in blood,
innervates stylopharyngeus muscle