Lecture 10 Oct-6-11 Chapter 14

Lecture 10 Oct-6-11 Chapter 14 - Ch-14 The Brain And Cranial

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Unformatted text preview: Ch-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & PIntroduction to Anatomy and PhysiologyChapter 14 The Brain And Cranial NervesCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P2The BrainSix Regions of the Brain1) Cerebrum2) Cerebellum3) Diencephalon4) Mesencephalon5) Pons6) Medulla oblongataBrain Stem141 An Introduction to Brain Structures and FunctionsCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P3The Brain1) CerebrumLargest part of brainControls higher mental functionsDivided into left and right cerebral hemispheres Surface layer of gray matter (neural cortex) Neural cortexAlso called cerebral cortexFolded surface increases surface areaElevated ridges (gyri)Shallow depressions (sulci)Deep grooves (fissures)Ch-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P4The Brain2) CerebellumSecond largest part of brainCoordinates repetitive body movementsTwo hemispheresCovered with cerebellar cortexCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P5The Brain3) DiencephalonLocated under cerebrum and cerebellumLinks cerebrum with brain stem Three divisionsLeft thalamus Right thalamusHypothalamusCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P6The Brain3) DiencephalonThalamusRelays and processes sensory informationHypothalamusHormone productionEmotionAutonomic functionPituitary glandMajor endocrine gland Connected to hypothalamusVia infundibulum (stalk)Interfaces nervous and endocrine systemsCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P7The Brainhe Brain Stem Processes information between Spinal cord and cerebrum or cerebellumIncludes1)MesencephalonAlso called midbrainProcesses sight, sound, and associated reflexesMaintains consciousness 1)PonsConnects cerebellum to brain stemIs involved in somatic and visceral motor control1)Medulla oblongataConnects brain to spinal cordRelays informationRegulates autonomic functions: Ch-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P8The BrainCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P9The BrainVentricles of the BrainOrigins of ventriclesNeural tube encloses neurocoelNeurocoel expands to form chambers (ventricles) lined with ependymal cellsEach cerebral hemisphere contains one large lateral ventricleSeparated by a thin medial partition (septum pellucidum)Third ventricleVentricle of the diencephalon Lateral ventricles communicate with third ventricle: via interventricular foramen (foramen of Monro)Fourth ventricleExtends into medulla oblongataBecomes continuous with central canal of the spinal cord...
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Lecture 10 Oct-6-11 Chapter 14 - Ch-14 The Brain And Cranial

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