Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 25.5, Problem 3CC
The active vasodilator nerves to the skin secrete ACh but are classified as sympathetic neurons. On what basis were they identified as sympathetic?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Anisha is preparing for a physiology test and she faces some difficulties in the topic of
peripheral nervous system. Help her to complete Tables 1 and 2 in your answer book.
Table 1 Comparison between somatic nervous system and autonomic nervous system
Characteristics
Effectors
General function
Somatic nervous system
Autonomic nervous system
Effects on target tissues
Number of neurons in the
efferent pathway
Table 2 Comparison between sympathetic division and parasympathetic division
Characteristic
Origin and site of outflow
Relative length of pre- and
postganglionic fibers
Neurotransmitter
Sympathetic division
Parasympathetic division
Physiological functions
Myelination
Receptors
release of --------- onto skeletal muscle blood vessles result in ......
1. Acetylcholine, vasoconstriction
2.norepinephrine,vasoconstriction
3.Acetylcholine, vasolidation
4,norepinephrine, vasolifation
1.can you tell me why do we choose sympathetic instead of para symapthetic. make it short and clear.
2.If we say sympathetic why do we choose pregangolic with ACH ? how can I know?
3. explain how is alpha beta thing relate. How do you choose vasoconstriction vs vasolidation?
please teach me a trick. make it short and claer please. I get so confused
Most tissues regulated by the autonomic nervous system receive both sympathetic and parasympathetic input from postganglionic neurons. Responses are typically local. In contrast, the adrenal medulla receives input only from the sympathetic division and only from preganglionic neurons, yet responses are observed throughout the body. Explain why.
Chapter 25 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 25.2 - If venous PO2 decreases as exercise intensity...Ch. 25.3 - In Figure 25.8b, why does the line for mean blood...Ch. 25.5 - The active vasodilator nerves to the skin secrete...Ch. 25 - Name the two muscle compounds that store energy in...Ch. 25 - Prob. 2RQCh. 25 - Prob. 3RQCh. 25 - Prob. 4RQCh. 25 - Prob. 5RQCh. 25 - What is meant by the term oxygen deficit, and how...Ch. 25 - Prob. 7RQ
Ch. 25 - In endurance events, body temperature can reach...Ch. 25 - Prob. 9RQCh. 25 - Prob. 10RQCh. 25 - Prob. 11RQCh. 25 - Prob. 12RQCh. 25 - Match the following brain areas with the...Ch. 25 - Specify whether each of the following parameters...Ch. 25 - Why doesnt increased venous return during exercise...Ch. 25 - Diagram the three theories that explain why the...Ch. 25 - Prob. 17RQCh. 25 - Explain how exercise decreases blood glucose in...Ch. 25 - Prob. 19RQCh. 25 - Prob. 20RQCh. 25 - The following graph shows left ventricular...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Discuss the concept of termination of neurotransmitter action by comparing the mechanisms by which acetylcholine and nitric oxide's actions are terminated. (a) Name the three primary mediators of purinergic receptors. (b) Which one of these mediators is sometimes used to treat supraventricular tachycardia? (c) Explain why the drug in (b) is considered safer than verapamil in the treatment of supraventricular tachycardia?arrow_forwardThe concentration of potassium ions inside a nerve cell membrane is higher than the concentration of sodium ions outside the mem-brane, yet the inside of the membrane (where the cation concentra-tion is higher) is negative to the outside. Explain this observation in terms of permeability properties of the membrane.arrow_forwardFor each of the following statements about the sympathetic nervous system, state whether it is true or false. Postganglionic neurons can stimulate the heart [Select] Preganglionic nerve fibers originate from the brainstem or from the sacral part of the spinal cord [Select] Preganglionic fibers are relatively long [Select] Preganglionic neurons release acetylcholine [Select] Postganglionic neurons can stimulate skeletal muscle [Select] Postganglionic neurons release acetylcholine [Select]arrow_forward
- Under anesthesia, acetylcholinesterase inhibitors can be given in combination with blockade of muscarinic receptors. Explain the purpose of the two treatments.arrow_forwardWhat are the main differences between the sympathetic and parasympathetic branches of the autonomic nervous system?arrow_forwardDefine somatotropinarrow_forward
- a) How does a CAP differ from a single action potential? b) Action potentials are said to be all or none responses. Why does the frog sciatic nerve give a graded response?arrow_forwardSympathetic innervation can have pro- and anti- inflammatory effects. Which of the following statements does not support this suggestion relative to a mouse model of inflammatory bowel disease (IBD). O Mice lacking the beta2-adrenergic receptor were less susceptible to this experimental IBD Catecholamines acting on alpha2-adrenoreceptors led to proinflammatory (IL-1beta, IL-6, and TNF-alpha) production worsening the IBD in mice Mice lacking the beta2-adrenergic receptor were more susceptible to this experimental IBDarrow_forwardA nerve conduction velocity test measures nerve conduction velocity. In this test, an electrical stimulus is applied to a peripheral nerve and the length of time it takes for the corresponding muscle to contract is measured. Because the length of the nerve from stimulus point to muscle and the time it takes for the muscle to contract are both known, NCV can be calculated. This test result is helpful in distinguishing between different types of pathologies. For example, a patient with muscle weakness is being tested by a physician. There are three possible sources of the weakness: Disease of the muscle itself such as muscular dystrophy. In this condition, normal muscle tissue is replaced by adipose tissue and the muscle becomes incapable of contraction. Disease at the neuromuscular junction (NMJ) such as myasthenia gravis. This condition is described in the Skeletal Muscle Histology exercise and results from damage to the acetylcholine receptors on the muscle end plate. Disease…arrow_forward
- In multiple sclerosis, nerve fibers in the CNS lose their myelin. Explain why this loss affects skeletal muscle function.arrow_forwardWhat is the muscarininc acetylcholine receptor? Where is it expressed?arrow_forwardOne mechanism underlying the anesthesia is opening increase numbers of potassium leak channels. How/why would this mechanism cause anesthesia?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeEssentials of Pharmacology for Health ProfessionsNursingISBN:9781305441620Author:WOODROWPublisher:CengageHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Essentials of Pharmacology for Health Professions
Nursing
ISBN:9781305441620
Author:WOODROW
Publisher:Cengage
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Nervous System - Get to know our nervous system a bit closer, how does it works? | Neurology; Author: FreeMedEducation;https://www.youtube.com/watch?v=6O-0CVAgaEM;License: Standard youtube license