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Chapter 19.pe - Chapter19 NervousSystem &Wilkins &Wilkins

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Copyright  ©  2008 Lippincott Williams & Wilkins. Chapter 19 Introduction to Nerves and the  Nervous System
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Copyright  ©  2008 Lippincott Williams & Wilkins. Role of the Nervous System Controls the functions of the human body Analyzes incoming stimuli Integrates internal and external responses
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Copyright  ©  2008 Lippincott Williams & Wilkins. 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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Copyright  ©  2008 Lippincott Williams & Wilkins. 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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Copyright  ©  2008 Lippincott Williams & Wilkins. Neuron
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Copyright  ©  2008 Lippincott Williams & Wilkins. 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  to the periphery to stimulate muscles or glands
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Copyright  ©  2008 Lippincott Williams & Wilkins.
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