human physiology study questions 9

human physiology study questions 9 - B The autonomic...

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2/11/08 Lecture 9: Structure and Function of the Nervous System (Ch. 6, pg. 173-187) Study Questions 1. Which part of the Diencephalon is essential for multiple survival behaviors and homeostatic regulation? A. Thalamus B. Reticular formation C. Third cerebral ventricle D. Hypothalamus E. Pons 2. Select the following statement that correctly describes neurons in the Peripheral Nervous System (PNS). A. The somatic nervous system is an afferent subdivision of the PNS that consists of a single neuron innervating skeletal muscle.
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Unformatted text preview: B. The autonomic nervous system is an efferent subdivision of the PNS that consists of a two-neuron chain that will only lead to excitation of the effector cells. C. Preganglionic neurons in both the parasympathetic and the sympathetic divisions of the autonomic nervous system release acetylcholine. D. The gray matter in the spinal cord is composed of nerve cell bodies and dendrites while the white matter contains myelinated axons. E. Both C and D are correct. Answers: 1) D; 2) C...
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