Lecture 10 Oct-6-11 Chapter 14

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

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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 Stem14–1 An Introduction to Brain Structures and FunctionsCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P3The Brain1) Cerebrum–Largest part of brain–Controls higher mental functions–Divided into left and right cerebral hemispheres –Surface layer of gray matter (neural cortex) –Neural cortex•Also called cerebral cortex•Folded surface increases surface area•Elevated ridges (gyri)•Shallow depressions (sulci)•Deep grooves (fissures)Ch-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P4The Brain2) Cerebellum–Second largest part of brain–Coordinates repetitive body movements–Two hemispheres–Covered with cerebellar cortexCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P5The Brain3) Diencephalon–Located under cerebrum and cerebellum–Links cerebrum with brain stem – Three divisions•Left thalamus •Right thalamus•HypothalamusCh-14 The Brain And Cranial NervesOct-6-2011Bio 2870 A & P6The Brain3) Diencephalon–Thalamus•Relays and processes sensory information–Hypothalamus•Hormone production•Emotion•Autonomic function–Pituitary gland•Major endocrine gland •Connected to hypothalamus•Via 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 cerebellum–Includes1)Mesencephalon•Also called midbrain•Processes sight, sound, and associated reflexes•Maintains consciousness 1)Pons•Connects cerebellum to brain stem•Is involved in somatic and visceral motor control1)Medulla oblongata•Connects brain to spinal cord•Relays information•Regulates 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 Brain•Ventricles of the Brain–Origins of ventricles•Neural tube encloses neurocoel•Neurocoel expands to form chambers (ventricles) lined with ependymal cells–Each cerebral hemisphere contains one large lateral ventricle•Separated by a thin medial partition (septum pellucidum)–Third ventricle•Ventricle of the diencephalon •Lateral ventricles communicate with third ventricle: –via interventricular foramen (foramen of Monro)–Fourth ventricle•Extends into medulla oblongata•Becomes continuous with central canal of the spinal cord...
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This note was uploaded on 12/14/2011 for the course BIO 2870 taught by Professor Spranger during the Spring '08 term at Wayne State University.

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

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