Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Question
Chapter 43, Problem 6TY
Summary Introduction
Introduction: The nervous system of humans is composed of CNS and PNS. CNS stands for “Central nervous system” and it is composed of brain and the spinal cord. However, Peripheral nervous system contains the neurons that connect brain and spinal cord to each other and to other parts of the body. The peripheral system of the nervous system is categorized into two subgroups. These are “somatic nervous system and autonomic nervous system”.
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Activation of the sympathetic nervous system causes: a. increased blood flow into the skin b. a decreased heart rate c. an increased heart rate d. increased digestion
Which of the following releases norepinephrine as a neurotransmitter?
a. preganglionic sympathetic neurons
b. preganglionic parasympathetic neurons
c. postganglionic sympathetic neurons
d. postganglionic parasympathetic neurons
Parasympathetic nerves _____.
A
cause smooth muscle in blood vessel walls to contract
B
cause smooth muscle in blood vessel walls to relax
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have no role in the innervation of blood vessels
Chapter 43 Solutions
Biology
Ch. 43.1 - Core Skill: Connections Nervous systems are one of...Ch. 43.1 - Scientists have determined that the brain mass of...Ch. 43.2 - Prob. 1CCCh. 43.2 - Prob. 2CCCh. 43.2 - Prob. 3CCCh. 43.3 - Core Skill: Modeling The goal of this modeling...Ch. 43.3 - What was the hypothesis proposed by Gaser and...Ch. 43.3 - Prob. 2EQCh. 43.3 - CoreSKILL Based on the results described here and...Ch. 43 - A nerve net consists of a. bilateral neurons that...
Ch. 43 - Prob. 2TYCh. 43 - Prob. 3TYCh. 43 - The white matter of the CNS is composed of a....Ch. 43 - Prob. 5TYCh. 43 - Prob. 6TYCh. 43 - Prob. 7TYCh. 43 - Prob. 8TYCh. 43 - In humans, the ______ blank hemisphere of the...Ch. 43 - ______ blank is a progressive disease that causes...Ch. 43 - Prob. 1CQCh. 43 - Prob. 2CQCh. 43 - Core Concept: Systems New properties of life...Ch. 43 - Discuss how the two parts of the nervous system of...Ch. 43 - List the three major divisions of the brain of...
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- Sympathetic stimulation to lung tissue A. Causes activation of beta2 receptors which contract smooth muscles of airways. B. Causes activation of beta1 receptors which relax smooth muscles of airways C. Causes activation of beta2 receptors which relax smooth muscles of airways. D. Causes activation of beta1 receptors which contract smooth muscles of airwaysarrow_forwardSympathetic nerve stimulation does not causea. the liver to release glycogen.b. the dilation of bronchioles.c. the gastrointestinal tract to digest food.d. an increase in the heart rate.arrow_forwardWhich of the following is not associated with sympathetic stimulation? a. arteriolar dilation in skeletal muscle b. flight or fight c. preparation for energy expenditure d. diffuse effects e. small intestine absorption of nutrients.arrow_forward
- Atropine A.Tends to stimulate excitatory (sympathetic) functions. B.Increaes heart rate. C.Stimulates parasympathetic function D.Blocks parasympathetic functionarrow_forwarda. The nerves connecting the ganglia make up the ______________. b. What is the lowest of the chain ganglia? c. Each sympathetic chain extends from the ___________ to the ____________.arrow_forwardMultiple sclerosis is a neurodegenerative disease in which the body’s immune system attacks and breaks down the white matter in the nervous system. A. What is another word (other than “white matter”) for the structure or type of cells that are affected in patients with MS? B. Given what these cells/structures do, what effect on neural transmission do you think MS has?arrow_forward
- The effects of sympathetic and parasympathetic fibers are cooperative ina. the heart.b. the reproductive system.c. the digestive system.d. the eyes.arrow_forwardWhich of these may be produced by the action of nitric oxide? a. Dilation of blood vessels b. Erection of the penis c. Relaxation of smooth muscles in the digestive tract d. Long-term potentiation (LTP) among neighboring synapses in the brain e.All of thesearrow_forwardNicotinic receptors are located ina. postganglionic neurons of the parasympathetic division.b. postganglionic neurons of the sympathetic division.c. membranes of skeletal muscle cells.d. Both a and b are correct.e. all of these sites.arrow_forward
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