~BN05 CNS-Forebrain Anatomy

~BN05 CNS-Forebrain Anatomy - ● Fornix ~ Amygdala...

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Anatomy of the Central Nervous System: Forebrain Lecture 5
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Telencephalon - Cortex Gray Matter Somas and Dendrites Neocortex - 6 layers Sensory input ---> layer IV Motor output ---> layer V Paleocortex - 2 or 3 layers ~
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Telencephalon - Fiber Systems White Matter - myelinated axons 3 types of fiber systems Commissural Association Projection ~
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Commissural Fibers Interconnect homologous structures in the two hemispheres Corpus Callosum Anterior and Posterior Hippocampal ~
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Anterior Anterior
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Association Fibers interconnect cortical areas within each hemisphere Projection Fibers all other fiber systems Fornix Corticospinal tract Mammillothalamic tract Naming convention ~ Association & Projection Fibers
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Association  Commissural Projection    Hemispheres Left               Right
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The Limbic System Emotion Learning & Memory Structures Thalamus Hypothalamus Hippocampus Cingulate gyrus Amygdala
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Unformatted text preview: ● Fornix ~ Amygdala Hippocampus Limbic System Thalamus Hypothalamus Cingulate gyrus Fornix Basal Ganglia ■ Extrapyramidal Motor System ● Caudate ● Putamen ● Globus Pallidus Striatum Lenticular Nucleus ● Claustrum ● Amygdala no motor function ~ Caudate Amygdala Putamen Globus pallidus Claustrum Diencephalon ■ Surrounds third ventricle ■ Thalamus ● sensory and motor relay nuclei ■ Hypothalamus ● motivation & emotion ~ Thalamus ■ Lateral Geniculate Nuclei - LGN ● vision ■ Medial Geniculate Nuclei - MGN ● audition ■ Ventroposterior Nuclei - VPL & VPM ● somatosensation ■ Massa Intermedia - crosses midline ~ Hypothalamus ■ Control of behaviors critical to survival ● Feeding ● Fighting ● Fleeing ● Mating ■ Controls the pituitary gland ~ Thalamus Diencephalon: thalamus LGN MGN Massa Intermedia Diencephalon Hypothalamus Pituitary Stalk...
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This note was uploaded on 12/24/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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~BN05 CNS-Forebrain Anatomy - ● Fornix ~ Amygdala...

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