APK 2100C Lecture Notes - Lecture 11: Hypoglossal Nerve, Olfactory Bulb, Medulla Oblongata
31 Jul 2016
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Document Summary
Stretch, pain, temperature, chemical changes, irritation in viscera, nausea, hunger. Motor innervation of smooth and cardiac muscle, glands. Mixed nerves= contain afferent and efferent axons. 12 pairs of nerves, roman numerals label rostral to caudal attached to brain and pass through skull foramina. Sensory function: special visceral sense of smell. Origin: olfactory receptor cells in nasal cavity. Path: through cribriform foramina of ethmoid bone. Path: through optic canal of sphenoid bone. Motor function: innervates superior rectus, medial rectus, inferior rectus, inferior oblique muscles (extrinsic eye muscles); innervate levator palpebrae superioris muscle (elevates upper eyelid) Motor function: innervates superior oblique muscle smallest cranial nerve. Sensory function: touch, temperature, and pain to face divisions in ophthalmic, maxillary, mandibular regions. Motor function: lateral rectus muscle innervated that abducts the eye. Motor function: movement of facial muscles (ex. Sensory function: equilibrium (vestibular branch) and hearing (cochlear branch) Cn ix- glossopharyngeal nerves innervates tongue (sensory taste function), pharynx, and parotid salivary gland.
