Anatomy Ch. 15 Autonomic Nervous System study guide Questions with Answers
somatic (PNS) - Correct Answer sensory and motor autonomic (PNS) - Correct Answer involuntary control sympathetic nervous system (ANS) - Correct Answer - fight or flight - increases alertness and metabolic activities - prepares body to withstand stress parasypathetic nervous system (ANS) - Correct Answer - rest and digest - conserves energy and replenishes nutrient stores Structure of Sympathetic Division - Correct Answer - preganglionic neurons emerge from thoracolumbar regions of spinal cord - postganglionic neurons are long and innervate several organs sympathetic ganglia - Correct Answer sympathetic trunk ganglia and prevertebral ganglia Structure of the Parasympathetic Division - Correct Answer - preganglionic neurons emerge from craniosacral regions of spinal cord - postganglionic fibers are short and innervate only one organ Parasympathetic ganglia - Correct Answer bundles of preganglionic soma from cranial nerves sympathetic - Correct Answer - pregang fibers synapse far from end organ - pregang fibers synapse with 20 postgang neurons - postgang neurons terminate in multiple end organs (widespread) - enzymes that degrade NE
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