ch9 - Schedule for Chapters 9 & 10 Chapter 9: 2/6 & 2/9...

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Wells/VPHY3100 Chapter 9: Chapter 10: Chapter 10 readings: Focus on pp. 264-270 & 286-303 (11th ed)
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CHAPTER 9: The Autonomic Nervous System K. Wells VPHY3100: Elements of Physiology College Vet. Med.
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Wells/VPHY3100 Lecture Outline The CNS and PNS Spinal and cranial nerves The autonomic nervous system (ANS) Two major divisions of the ANS Sympathetic Parasympathetic Neurotransmitters & post-synaptic receptors of the ANS Autonomic regulation of internal organs
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Wells/VPHY3100 The CNS and the PNS The CNS: brain & spinal cord The PNS: nerves & ganglia outside the CNS 12 pairs of cranial nerves (exit brain) 31 pairs of spinal nerves (exit spinal cord) Most nerves are “mixed”, comprised of both FIGURE 8.28
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Wells/VPHY3100 Lecture Outline The CNS and PNS Spinal and cranial nerves The autonomic nervous system (ANS) Two major divisions of the ANS Sympathetic Parasympathetic Neurotransmitters & post-synaptic receptors of the ANS Autonomic regulation of internal organs
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The Autonomic Nervous System Regulation of cardiac muscle, smooth muscle, and glands Control of “involuntary” visceral organs & blood vessels The autonomic (or visceral) motor system contrasts with the somatic motor system Efferent neurons: autonomic motor neurons vs. somatic motor neurons Central control: frontal cortex & subcortical structures (somatic) vs. hypothalamus, brain stem, & spinal cord (autonomic)
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FIGURE 9.1 (sympathetic)
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Wells/VPHY3100 Autonomic vs. Somatic Motor Systems
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Wells/VPHY3100 Lecture Outline The CNS and PNS Spinal and cranial nerves The autonomic nervous system (ANS) Two major divisions of the ANS Sympathetic Parasympathetic Neurotransmitters & post-synaptic receptors of the ANS Autonomic regulation of internal organs
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Two Divisions of the ANS Sympathetic and parasympathetic divisions Both divisions consist of: preganglionic neurons (cell bodies in the CNS) and postganglionic neurons (cell bodies in the PNS) The divisions differ in: the origination of preganglionic fibers and the location of autonomic ganglia General functional differences: “rest & digest” (parasympathetic) vs. “fight or flight” (sympathetic)
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This note was uploaded on 02/28/2009 for the course VPHY 3100 taught by Professor W during the Spring '05 term at University of Georgia Athens.

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ch9 - Schedule for Chapters 9 & 10 Chapter 9: 2/6 & 2/9...

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