Chapter15AutonomicNSMarieb

Chapter15AutonomicNSMarieb - Ch 15: Autonomic Division of...

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Ch 15: Autonomic Division of NS Compare and contrast the structures of the sympathetic and the parasympathetic divisions, including functions and neurotransmitters. Show the levels of integration in the ANS, and compare these with the SNS. Developed by John Gallagher, MS, DVM
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ANS is all efferent!
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Overview of ANS Pathway for Visceral Motor Output The somatic NS uses one effector nerve but the ANS output always involves two neurons between the CNS (brain and spinal cord) and effector. Fig 15.2
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Overview of ANS ANS has two divisions with both structural AND functional differences: 1. Parasympathetic Rest and Repose 1. Craniosacral output 2. Digestion, “housekeeping” 3. Postganglionic axons release Ach (Cholinergic) 2. Sympathetic- Fight or Flight 1. Thoracolumbar output 2. Heart Rate, Respiration 3. Vasoconstriction 4. Postganglionic axons release NE (Adrenergic)
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: Some Nomenclature Neuron #1: preganglionic (presynaptic) Neuron #2: ganglionic (postsynaptic) effector Preganglionic fiber (=axon): Lightly myelinated Postganglionic fiber Unmyelinated effector Naming of neurons:
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This note was uploaded on 12/16/2011 for the course BIOLOGY 101 taught by Professor Mr.wallace during the Fall '11 term at Montgomery College.

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Chapter15AutonomicNSMarieb - Ch 15: Autonomic Division of...

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