Chapter 19.pe - Chapter19 NervousSystem &Wilkins &Wilkins

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Chapter 19 Introduction to Nerves and the  Nervous System
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Role of the Nervous System Controls the functions of the human body Analyzes incoming stimuli Integrates internal and external responses
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Makeup of the Nervous System Central nervous system (CNS) Composed of the brain and spinal cord Peripheral nervous system (PNS) Sensory receptors bring information into the CNS Motor nerves carry information away from the CNS  Autonomic nervous system (ANS) Uses components of the CNS and PNS to regulate  automatic or unconscious responses to stimuli
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Functions of the Cells That Make Up the Nervous  System Allow movement Allow realization of various sensations Provide response to internal and external stimuli Stimulate learning, thinking, and emotions
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Neuron
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Types of Axons Afferent fibers  Nerve axons that run from peripheral receptors into the  CNS Efferent fibers Nerve axons that carry nerve impulses from the CNS 
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This note was uploaded on 02/19/2011 for the course RNSG 1301 taught by Professor Loftin during the Spring '11 term at Lone Star College.

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Chapter 19.pe - Chapter19 NervousSystem &Wilkins &Wilkins

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