Quiz 7 Review sheet - 1112 PDF

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Quiz 7 Review sheet – Waheguru Cranial Nerve I – OLFACTORY  Afferent  Smell  Cribriform plate of ethmoid bone Cranial Nerve II – OPTIC  Afferent  Vision (retina  primary visual cortex in occipital lobes)  Optic canal (apex of orbit) Cranial Nerve III – OCCULOMOTOR  Efferent  Muscles of moving eye (somatic efferent innervation)  Constriction of pupil of eye (circular muscle of iris)  Accommodations of lens (ciliary muscle)  Parasympathetic efferent innervation  Superior Orbital Fissure (Sphenoid Bone) Cranial Nerve IV – TROCHLEAR NERVE  Efferent  Eyes muscles  Superior Orbital Fissure (Sphenoid Bone) Cranial Nerve V – TRIGEMINAL NERVE  Efferent and Sensory  3 divisions: Ophthalmic (S) , Maxillary (S), Mandibular (S&E)  SOF(V1) -- Foramen Rotundum(V2) -- Foramen Ovale(V3)  all in Sphenoid Cranial Nerve VI – ABDUCENS NERVE  Efferent  Eye muscles  SOF Cranial Nerve VII – FACIAL NERVE  Mixed – Efferent Somatic, Efferent Parasympathetic, Afferent Sensory  Efferent somatic : 1) Muscles of facial Expression 2) Stapedius Muscle in middle ear  Efferent parasympathetic: 1) lacrimal gland 2) Submandibular, sublingual Salivary glands  Afferent sensory – taste sensation to anterior 2/3 of tongue via Chorda Tympani nerve  Major motor branches exits: Stylomastoid foramen; Chorda tympani exits from Petrotypmanic fissure (next to TMJ) – both in temporal bone. Cranial Nerve VIII – VESTIBULOCOCHLEAR NERVE  Afferent  2 major branches: 1) Vestibular: Sensory innervation of vestibule apparatus semicircular canals (sense of balance) 2) Cochlear - cochlea of inner ear – hearing Nerves travel from cochlea  temporal lobes of cortex  Travels through internal acoustic meatus.

Cranial Nerve IX – GLOSSOPHARYNGEAL NERVE  Mixed – efferent somatic, efferent autonomic/parasympathetic, afferent innervation  Efferent somatic (motor) – controls Stylopharyngeous muscle  Efferent autonomic (parasympathetic) – Parotid Salivary Gland  Afferent: general sensation and taste sensation to Posterior 1/3 of tongue, sensory innervation to pharynx. Cranial Nerve X – VAGUS NERVE “wandering”  Mixed – efferent somatic, afferent, and efferent parasympathetic.  80-90% of nerves fibers are sensory, carrying sensory information to brain from viscera and body organs  Efferent Somatic (motor) – muscles of soft palate, pharynx and larynx.  Efferent/parasympathetic innervation of heart: slows heart rate. Cranial Nerve XI – ACCESSORY NERVE  Efferent  Muscles of neck, soft palate and pharynx  Vagus and Glossopharyngeal nerves through Jugular Foramen (located in base of skull, formed by temporal bone and occipital bone) Cranial Nerve XII – HYPOGLOSSAL NERVE  Efferent somatic  Muscles of tongue  Hypoglossal canal (occipital bone)...