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Autonomic Nervous System (ANS)
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Componenets of CNS and PNS that are concerned with the control of visceral functions
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Nucleus
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A CNS center with discrete anatomical boundaries
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Center
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A group of neuron cell bodies in the CNS that share a common function
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Tract
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A bundle of axons within the CNS that share a common origin, destination, and function
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Column
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A group of tracts found within a specific region of the spinal cord
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Pathways
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Centers and tracts that connect the brain with other organs and systems in the body
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Ganglia
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An anatomically distinct collection of sensory and motor neuron cell bodies within the PNS
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Nerve
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A bundle of axons in the PNS
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Gray matter
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Nerual tissue dominated by neuron cell bodies
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White matter
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Neural tissue dominated by myelinated axons
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Neurol cortex
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A layer of gray matter at the surface of the brain
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Neuron
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The basic functional unit of the nervous system; a highly specialized cell; a nerve cell
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Sensory neuron
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A neuron whose axon carries sensory info form the PNS toward the CNS
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Motor neuron
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A neuron whose axon carries motor commands from the CNS toward effectors in the PNS
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Soma
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The cell body of a neuron
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