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Anatomy of the Central Nervous System: part 2

Telencephalon - Cortex. Gray Matter Somas and DendritesNeocortex - 6 layersSensory input ---> layer IVMotor output ---> layer VPaleocortex - 2 or 3 layers ~. Telencephalon - Fiber Systems. White Matter - myelinated axons3 types of fiber systemsCommissuralAssociationProjection ~ . Commissural Fibers .

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Anatomy of the Central Nervous System: part 2

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    1. Anatomy of the Central Nervous System: part 2 Lecture 11

    3. Telencephalon - Fiber Systems White Matter - myelinated axons 3 types of fiber systems Commissural Association Projection ~

    4. Commissural Fibers Interconnect homologous structures in the two hemispheres Corpus Callosum Anterior and Posterior Hippocampal ~

    6. Association Fibers interconnect cortical areas within each hemisphere Projection Fibers all other fiber systems Fornix Corticospinal tract Mammillothalamic tract Naming convention ~

    8. The Limbic System Emotion Learning & Memory Structures Thalamus Hypothalamus Hippocampus Cingulate gyrus Amygdala Fornix ~

    10. Basal Ganglia Extrapyramidal Motor System Caudate Putamen Globus Pallidus Claustrum Amygdala no motor function ~

    13. Diencephalon Surrounds third ventricle Thalamus sensory and motor relay nuclei Hypothalamus motivation & emotion ~

    14. Thalamus Lateral Geniculate Nuclei - LGN vision Medial Geniculate Nuclei - MGN audition Ventroposterior Nuclei - VPL & VPM somatosensation Massa Intermedia - crosses midline ~

    15. Hypothalamus 4Fs feeding fighting fleeing, and ... mating Controls the pituitary gland ~

    19. Mesencephalon Surrounds cerebral aqueduct Tectum Superior Colliculi - vision Inferior Colliculi - audition Tegmentum

    21. Tegmentum Periaqueductal Gray - pain Reticular Formation - sleep and arousal, attention Red Nucleus and Substantia Nigra - motor system Ventral Tegmental Area - VTA - reinforcement

    22. Metencephalon Surrounds fourth ventricle Cerebellum coordinates movements Pons Sleep and arousal Reticular formation ~

    24. Medulla - Vital Centers Reticular formation Myelencephalon

    27. Spinal cord Dorsal horn - sensory input Lateral horn - autonomic N.S. Ventral horn - motor output ~

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