Biology 109 Review Questions Lecture Test 4 Summer 2015 Autonomic Nervous System 1.What is the function of the ANS? 2.What are the two divisions of the ANS?-Somatic motor system and Autonomic nervous systems 3.How does the ANS operate to control visceral function? 4.Which division of the ANS is responsible for the “fight or flight” response?-Sympathetic NS 5. What is the purpose of the “fight or flight” response? -when fully activated, produces “fight or flight” response (or stress response) that prepares body for physical activity 6.What is a preganglionic neuron or fiber? 7.Where is the cell body of a preganglionic neuron? 8.What is a postganglionic neuron or fiber? 9.Where does a preganglionic fiber synapse with a postganglionic fiber? 10.Why is the SNS referred to as the thoracolumbar division? 11.Name the three sympathetic pathways. 12.What is the effect of sympathetic stimulation on the adrenal medulla? 13.What body regions are innervated by sympathetic chain ganglia? 14.What body region is innervated by collateral ganglia? 15.What is the general function of the PNS? 16.Why is the PNS referred to as the craniosacral division of the autonomic nervous system? 17.Describe the organization of the PNS. 18.What structures in the body are innervated by PNS postganglionic fibers? 19.Which nerve contains most of the fibers associated with the PNS?
20.What is dual innervation? 21.What are antagonistic effects? 22.What organs are innervated by SNS only? 23.What neurotransmitter is released by parasympathetic postganglionic fibers? 24.What is the primary neurotransmitter released by sympathetic postganglionic fibers? 25.What determines whether the effect of a neurotransmitter is excitatory or inhibitory?
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