Lecture 33 - Autonomic Nervous System: Sympathetic Division...

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Autonomic Nervous System: Sympathetic Division
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Overview of the nervous system Nervous System Central Nervous System (Brain and Spinal Cord) Peripheral Nervous System (Cranial and Spinal Nerves) Somatic Nervous System (Skeletal muscles) Autonomic Nervous System (Smooth Muscle, Cardiac Muscle, Glands) Sympathetic Division Parasympathetic Division Enteric Nervous System (Smooth Muscle, Glands of GI tract)
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Overview of Nervous System
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Why do we need the ANS? • What happens when you fall asleep? How do you maintain respiration and CV function without conscious thought? The ANS – operates without conscious control – operates via reflex arcs – is controlled by centers in the hypothalamus and brain stem
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Differences between somatic and autonomic nervous systems 1 efferent neuron exits CNS 2 efferent neurons exit CNS Output Voluntary Involuntary (self- governing) Control Skeletal muscle Cardiac muscle, smooth muscle and glands Effectors Somatic system Autonomic system
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Summary of anatomical differences Somatic Nervous System
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This note was uploaded on 03/24/2010 for the course PSIO 201 taught by Professor Stanescu during the Spring '08 term at University of Arizona- Tucson.

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Lecture 33 - Autonomic Nervous System: Sympathetic Division...

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