ANTR 350 1st Edition Lecture 13Outline of Last Lecture I. Gross anatomy of spinal cordII. Gray matterIII. White matterIV. Numbering of spinal nervesV. Anterior ramiOutline of Current Lecture II. Skull foraminaIII. Cranial nervesCurrent Lecture-know view of cross sectional skull foramina: where the openings for the cranial nerves are-CNI: olfactory nerve-attached to the olfactory bulbs of the frontal lobe-goes through the cribriform plate of the ethmoid bone-sense of smell-test: whether or not you could smell a really strong smell with both nostrils-damage: anosmia: partial or total loss of smell-CNII: optic nerve-attached to the thalamus of diencephalon-passes through the optic canal of the sphenoid bone-vision-optic chiasm is where some fibers from each eye cross over to the opposite side-damage: anopsia: loss of vision-CNIII: oculomotorThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.-attached to the midbrain-passes through the superior orbital fissure in the sphenoid bone-innervates (GSE) to 4 of 6 intrinsic eye muscles -supplies parasympathetic (GVEs to make pupil constrict and lens more spherical-test: move eye in all directions-CNIV: trochlear-attached to the midbrain-passes through the superior orbital fissure of the sphenoid bone-supplies GSEs to 1 extrinsic eye muscle: superior oblique-test: look down and lateral-damage: eyes don't move parallel, possible double vision-CNV: trigeminal-attached to pons-3 divisions-V1: ophthalmic division-passes through the superior orbital fissure-somatic sensory nerve from areas around the orbit, forehead, anterior scalp, sinuses, and upper nasal cavity-V2: maxillary division-goes through foramen rotundum-somatic sensory from the mid face and maxillary teeth-V3: mandibular-goes through foramen ovale-somatic sensory from the mandibular teeth and lower 1/3 of face and 2/3 of tongue-damage: pain in face-CNVI: abducens-attached to pons-passes through superior orbital fissure-eye movement-supplies GSEs to 1 extrinsic eye muscle: lateral rectus-test: have patient look laterally-CNVII: facial-attached to pons-enters skull through internal auditory meatus-motor branch exits skull through stylomastoid-carries somatic GSEs to muscles of facial expression-taste-parasympathetic motor GVEs to lacrimal (tears) and salivary glands-CNVIII: vestibulocochlear-attached to pons and medulla-enters skull through internal auditory meatus and never exits-hearing and balance-test: hearing test-CNIX: glossopharyngeal-attached to medulla-travels through jugular foramen-somatic sensory GSAs from pharynx and posterior 1/3 of tongue-taste-somatic motor GSEs to pharynx muscle-CNX: vagus-attached to medulla-exits skull through jugular foramen-motor part of gag reflex-damage: uvula will move to normal side, difficulty swallowing, hoarse voice-CNXI: spinal accessory-attached to medulla and upper spinal cord-exits skull through jugular foramen-carries somatic motor GSEs to sternocleidomastoid and trapezius muscles-CNXII: hypoglossal-attached to medulla-exits skull through hypoglossal canal-carries somatic motor GSEs to most extrinsic and intrinsic tongue muscles-damage: tongue will move to damaged
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