190lec11brain1 - 11 The Brain I: The cerebrum HKIN 190:...

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Unformatted text preview: 11 The Brain I: The cerebrum HKIN 190: Anatomy and Physiology I Tissue types in the body CMEN C onnective Tissue Blood Bone Cartilage Connective Tissue Proper M uscle Smooth Skeletal Cardiac E pithelial Squamous Cuboidal Columnar Pseudostratified Transitional N ervous Learning Objectives 1. To understand the classification/organization of the brain. 2. To understand the function of the cerebrum. Within this, to understand: a. The gross anatomy of the cerebrum. b. The difference between gray matter and white matter. c. The function of the gray matter along outer part of brain (cortex) d. The significance of the lobes of the brain. e. The function of the gray matter deep inside brain (nuclei) f. The function of the white matter deep inside brain (tracts/ commisures/association fibres) To understand the classification/organization of the brain. Learning Objective 1 1. Central nervous system (CNS) brain & spinal cord 2. Peripheral nervous system (PNS) all nerve tissue outside of brain & spinal cord Organization of the nervous system by location Organization of the brain Organization of the brain Brainstem Organization of the brain To understand the function of the cerebrum. Within this, to understand: a. The gross anatomy of the cerebrum. b. The difference between gray matter and white matter. c. The function of the gray matter along outer part of brain (cortex) d. The significance of the lobes of the brain. e. The function of the gray matter deep inside brain (nuclei) f. The function of the white matter deep inside brain (tracts/ commisures/association fibres) Learning Objective 2 cerebrum Order of discussion: 1. Gray matter versus white matter 2. Gray matter along outer part of brain (cortex): gyri and sulci 3. The lobes 4. Gray matter deep inside brain (nuclei) 5. White matter deep inside brain (tracts/commisures/ association fibres) Cerebrum White matter versus gray matter Gray matter versus white matter In the cerebrum, notice where the gray matter is along the periphery of the brain, as well as deep in the brain. Gray matter along outer part of brain (cortex) Cerebral cortex : gyri, sulci, fissures Gyrus/gyri = folds Sulcus/sulci = ridges Fissure = deep ridge What is the purpose of the folding nature? Cerebral cortex : Important gyri, sulci, fissures central sulcus [ precentral gyrus postcentral gyrus [ lateral cerebral sulcus parieto-occipital sulcus Primary motor cortex Primary sensory cortex aka aka Organizational pattern in cortex representation of body is organized in an orderly way b body map ` found in both motor and sensory cortex homunculus ( l little man z ) size of cortex devoted to body part depends on how sensitive body part is/skill required (not muscle mass) Plasticity following injury...
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This note was uploaded on 05/21/2011 for the course BHK 190 taught by Professor Janice during the Spring '11 term at The University of British Columbia.

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190lec11brain1 - 11 The Brain I: The cerebrum HKIN 190:...

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