ANAT 2646 1 - Organization of the Nervous System

ANAT 2646 1 - Organization of the Nervous System - Getting...

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Organization of the Nervous System Anatomic Divisions Central Nervous System Peripheral Nervous System Functional Divisions Autonomic (visceral) Nervous System Somatic Nervous System Central Nervous System Spinal Cord cervical thoracic lumbar sacral coccygeal Brain Forebrain telencephalon diencephalon Midbrain Hindbrain pons cerebellum medulla Brainstem Midbrain Pons Medulla Protecting the CNS 3 layers of connective tissue cerebral spinal fluid fat bone muscle Gray Matter Cell bodies: cortex, nuclei(cns), ganglia (pns) Unmyelinated fibers, usually dendrites
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White Matter Myelinated fibers, mainly axons Tract Lemniscus Fascicle Peduncle Spinoreticular vs Reticulospinal
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Unformatted text preview: Getting There From Here Ascending Tracts Descending Tracts Reflexes Motor Control Basal Ganglia Cerebellum Vestibular system Special Senses Vision Hearing Chemical senses Homeostasis Autonomic Nervous system Hypothalamus Autonomic Nervous System Sympathetic (Thoracolumbar) prepares the body for emergencies “Fight or Flight” Parasympathetic (Craniosacral) conserves and restores energy “Rest and Digest” Fluids Blood CNS Miscellaneous Thalamus Reflexes Memory and emotions (Limbic System) Peripheral Nervous System Cranial Nerves (12 pairs) Spinal Nerves (31 pairs)...
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