8 ANS

8 ANS - Autonomic Nervous System 1 1 1 1 1 Function of ANS...

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Autonomic Nervous System
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1. Function of ANS 1. Efferent system of the parasympathetic NS 1. Efferent system of the sympathetic NS 1. Afferent system 1. ANS dysfunction
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Includes all structures outside of the CNS Somatic division: voluntary NS u Spinal nerves u Cranial nerves Autonomic division: involuntary NS u Sympathetic u Parasympathetic
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Regulates homeostasis and reproduction Does this via unconscious regulation of visceral functions (cardiac, smooth muscles, and glands) Circulation, respiration, digestion, metabolism, secretions, body temperature, reproduction
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Both have sensory fibers, ascending pathways, descending pathways, etc.
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Somatic Visceral Area of concern External environment Internal Environment Effector Organs Musculoskeletal system Smooth muscle, glands, cardiac muscle Location of Motor Neurons CNS Outside CNS (ganglion) # of synapses Monosynaptic Disynaptic Control Mostly controlled voluntarily/ consciously Involuntary – not under conscious control
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Somatic vs. Autonomic NS SOMATIC AUNTONOMIC
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This note was uploaded on 09/02/2010 for the course OT 441 taught by Professor Stein during the Summer '10 term at USC.

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8 ANS - Autonomic Nervous System 1 1 1 1 1 Function of ANS...

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