chapter 15 - stimulate pupil to dilate. Parasympathetic-...

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Anatomy and Physiology ch.15 14/11/2007 08:32:00 Autonomic Nervous System Somatic vs. Autonomic NS 1. Preganglionic neuron myelinated 2. Postganglionic neuron unmyelinated 3. Sympathetic vs. Parasympathetic 1. 2. 3. Effects on Target Organs 1. always secrete acetylcholine in both sympathetic and parasympathetic 2. post-nicotinic 3. sympathetic usually adrenergic, secrete norepinephrine 4. bind to a poison 5. excite depending on the subclass Interaction of Two ANS Divisions 1. fibers from both sympathetic and parasympathetic, influenced by both 2. antagonistic- opposite effect example- iris of the eye, sympathetic-
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Unformatted text preview: stimulate pupil to dilate. Parasympathetic- stimulates pupil to constrict- work together 3. cooperative- working at two parts at the same problem example- secrete saliva sympathetic- triggering watery fluid parasympathetic- secreting mucus 4. dual innervation- operate on same structure, example- blood pressure 5. excite smooth muscles to constrict, stop stimulating-relax, pressure to cause it to expand Central Control of ANS 1. regulates basic functions in our body 2. 3. 14/11/2007 08:32:00 14/11/2007 08:32:00...
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This note was uploaded on 03/27/2008 for the course BIO 112 taught by Professor Zdor during the Spring '08 term at Andrews University.

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chapter 15 - stimulate pupil to dilate. Parasympathetic-...

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