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Anatomy Nervus System - Central Nervous System 5 distinct...

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Central Nervous System5 distinct layers1.Cerebrum2.Diencephalon-Thalamus-Hypothalamus-Epithalamus3.Midbrain4.Pons/CerebellumBrain Stem5.Medulla oblongataHallow areas of brainCerebrum-Lateral ventricleDiencephalon-3rdventricleMidbrain-Cerebral aqueductPons/Cerebellum-4thventricleSpinal cord-Central canal4 Main PonsI.Cerebrum1stMost anteriorHollow areas as lateral ventricles
-Divided into 2 hemispheres, connected by nerve fibers (nervetracts)  Commissural tract)Space between the hemispheres-Longitudinal fissureDeep to corpus Callosum-Lateral ventricleCerebrum - responsible for:- Consciousness-Logic thinking, higher emotion, abstract thought, creativity,higher memory, sensory interpretation, vision –>interpretation, higher motor activities.*** Gray matter doesn’t have myelin ***Frontal & Parietal LobesPrecentral gyrus (first bump)-Primary motor arc-Primary movements are initiated here.-Regulated motor neurons (interneuron’s)-Descending tracts to skeletal muscle-Controls primary movement contralaterally(opposite side)Postcentral gyrus (2ndbump)-Primary sensory-Interpret the location of touch-Contralateral – right brain interprets touch from the left side of the bodyOccipital LobeVisual cortex-Interprets vision-Info from eyesTemporal Lobe
Auditory cortex-Interprets soundsInsulaDeep to temporal lobe-Into the lateral sulcusBurping reflexMembrane divides the occipital lobe from the cerebellum-Deep fissure  transverse fissureWhite matter of cerebrum-Deep to cortex-Mylenated  nerve tract-Projection tracts-Run to and from the cerebral cortex (impulse)-Association tracts-Carry impulses to & from gyri within some hemisphere-Commassural tracts-Connect R & L hemispheres-Within the white matter, deep to corpus callosum  lateral ventricle-Gray matter is scattered within white matter***Internal capsule = Deeper layer of white matter (EXAM!!!) ***-Basal nuclei-Cell bodies completely surrounded by white matter-Responsible for coordination-Refine muscle movement
-Parkinson’s  damage to basal nuclei  Shakymovement-Emotional memory-Learning of habits-Arousal-Passage of timeII.DiencephalonDeep to & surrounded by cerebrumSeparated from cerebrum by white matter-

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Term
Fall
Professor
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Tags
Anatomy, Gray matter, white matter, Lateral ventricles

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