Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Question
Chapter 49, Problem 3TYK
Summary Introduction
Introduction: The PNS (peripheral nervous system) has two efferent components: motor system and autonomic nervous system. The three divisions of the autonomic nervous system are enteric division, sympathetic division, and the parasympathetic division.
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Which of the following statements concerning the preganglionic neuronsof the ANS is true?a. All parasympathetic preganglionic neurons secrete acetylcholine.b. Only parasympathetic preganglionic neurons secrete acetylcholine.c. All sympathetic preganglionic neurons secrete norepinephrine.d. Only sympathetic preganglionic neurons secrete norepinephrine.
A preganglionic neuron
A.
has its unmyelinated axon extending from the ganglion to the effector
B.
has it unmyelinated axon in the CNS & the axon extends to an autonomic ganglion
C.
has its cell body in the CNS & the dendrite extends to an autonomic ganglion
D.
has its cell body in the CNS & the axon extends to an autonomic ganglion
E.
has its cell body in the CNS & the axon extends to the CNS
Mark the following statements as true of false. If a statement is false, correct it to make a true statement. a. Ependymal cells regulate the composition and movement of cerebrospinal fluid. b. Schwann cells make myelin in the peripheral nervous system c. Microglia are neuroglial cells with an immune function. d. Oligodendrocytes repair damaged axons in the peripheral nervous system. e. Astrocytes regulate the extracellular environment of the brain and are key components of the blood-brain barrier. f. Oligodendrocytes and Schwann cells perform similar functions in different parts of the nervous system.
Chapter 49 Solutions
Study Guide for Campbell Biology
Ch. 49 - The organization of an organisms nervous system...Ch. 49 - Prob. 2IQCh. 49 - Prob. 3IQCh. 49 - Identify the structures (a-g) in the following...Ch. 49 - Prob. 5IQCh. 49 - Action potentials are initiated more readily in...Ch. 49 - Prob. 1SYKCh. 49 - Prob. 1TYKCh. 49 - Prob. 2TYKCh. 49 - Prob. 3TYK
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- Match the terms with their descriptions. ____ thalamus a. coordinates motor activity ____ dopamine b. connects the hemispheres ____ limbic system c. protects brain and spinal cord from some toxins ____ corpus callosum d. one type of neurotransmitter ____ cerebral cortex e. support team for neurons ____ cerebellum f. wrap brain and spinal cord ____ neuroglia g. roles in emotion and memory ____ ganglion h. most complex integration ____ blood-brain barrier i. cluster of neuron cell bodies ____ meninges j. regulates sleep-wake cyclearrow_forwardWhat are the nerve roots for the autonomic nervous system? a. Sympathetic = T2-T10; Parasympathetic = S2-4 b. Sympathetic = C1-C5; Parasympathetic = T2-T10 c. Sympathetic = T1-L2, Parasympathetic = CN3, 7, 9, 10 & S2-4 d. Sympathetic = CN3,7,9,10; Parasympathetic = T2-10arrow_forwardSympathetic splanchnic nerves are composed of A. preganglionic sympathetic axons that synapse in a sympathetic trunk ganglion. B. preganglionic sympathetic axons that did not synapse in a sympathetic trunk ganglion. C. postganglionic sympathetic axons that synapse in a sympathetic trunk ganglion. D. postganglionic sympathetic axons that did not synapse in a sympathetic trunk ganglion. E. None of the choices is correct.arrow_forward
- Preparing the body for the "fight-or-flight" response is the role of the a.parasympathetic division b.somatic nervous system c.cerebrum d.sympathetic divisionarrow_forwardWhich of the following releases norepinephrine as a neurotransmitter? a. preganglionic sympathetic neurons b. preganglionic parasympathetic neurons c. postganglionic sympathetic neurons d. postganglionic parasympathetic neuronsarrow_forwardWhich neurotransmitter is deficient and described as the main cause of Parkinson's disease? Select one: a. Dopamine b. Somatostatin c. Adrenaline d. Met-enkephalin e. Substance Parrow_forward
- Which of the following is correct about the sympathetic division of the autonomic nervous system? Select one: O A. sympathetic nerves exit the central nervous stem at the base of the brain and the sacral region of the spinal cord O B. the neurotransmitter released by postganglionic neurons is acetylcholine O C. the neurotransmitter released by postganglionic neurons is norepinephrine O D. sympathetic nerves form synapses in ganglia near or within an internal organ O E. sympathetic nerves typically exit the central nervous system and form ganglia located just outside the brainarrow_forwardWhich of the following is not a part of the periphrial nervous system (PNS)? a.somatic nervous system b.autonomic nervous system c.sensory neurons d. motor neurons e. spinal cordarrow_forwardWhich of the following is not correct about the parasympathetic division? Select one: O A. the neurotransmitter released by preganglionic neurons is acetylcholine O B. parasympathetic nerves always form synapses in ganglia near or within an internal organ O C. the neurotransmitter released by postganglionic neurons is acetylcholine D. parasympathetic nerves constitute a part of the autonomic nervous system O E. parasympathetic nerves exit the central nervous system at the thoracic and lumbar regions of the spinal cord Next pagearrow_forward
- The autonomic nervous system is part of the a. central nervous system. b. peripheral nervous system. c. sympathetic nervous system. d. parasympathetic nervous system.arrow_forwardWhich of the following is correct about the sympathetic division of the autonomic nervous system? Select one: O A. the neurotransmitter released by postganglionic neurons is norepinephrine O B. the neurotransmitter released by postganglionic neurons is acetylcholine O C. sympathetic nerves form synapses in ganglia near or within an internal organ O D. sympathetic nerves exit the central nervous system at the base of the brain and the sacral region of the spinal cord O E. sympathetic nerves typically exit the central nervous system and form ganglia located just outside the brainarrow_forwardThe vast majority of neurons are located in the a. Outer bulges of the neocortex b. Cerebellum and brainstem C. Autonomic Nervous System d. Creases in the neocortexarrow_forward
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