Anatomy & Physiology: An Integrative Approach
2nd Edition
ISBN: 9780078024283
Author: Michael McKinley Dr., Valerie O'Loughlin, Theresa Bidle
Publisher: McGraw-Hill Education
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Chapter 15, Problem 20DYKB
Summary Introduction
To determine:
How sympathetic innervation regulates the vasodilation or vasoconstriction in the same blood vessels.
Concept introduction:
There are cholinergic as well as adrenergic receptors. The signaling molecules like hormones or neurotransmitters are known as ligands as they get bound to the receptors.
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Chapter 15 Solutions
Anatomy & Physiology: An Integrative Approach
Ch. 15.1 - What criterion is used to organize the nervous...Ch. 15.1 - Prob. 2WDYLCh. 15.1 - What CNS structure is the integration and command...Ch. 15.2 - Prob. 4WDYLCh. 15.2 - Describe the general anatomic differences in the...Ch. 15.2 - Prob. 6WDYLCh. 15.3 - Which four cranial nerves have a parasympathetic...Ch. 15.3 - What organs are innervated by the pelvic...Ch. 15.4 - Prob. 9WDYLCh. 15.4 - Prob. 10WDYL
Ch. 15.4 - Prob. 11WDYLCh. 15.4 - In what ways does the adrenal medulla pathway help...Ch. 15.5 - Prob. 13WDYLCh. 15.5 - Prob. 14WDYLCh. 15.5 - Prob. 15WDYLCh. 15.5 - Prob. 16WDYLCh. 15.5 - Prob. 17WDYLCh. 15.6 - Prob. 18WDYLCh. 15.6 - Prob. 19WDYLCh. 15.6 - Prob. 20WDYLCh. 15.6 - What are the body structures innervated by the...Ch. 15.7 - Prob. 22WDYLCh. 15.7 - Prob. 23WDYLCh. 15 - A splanchnic nerve in the sympathetic division of...Ch. 15 - Some parasympathetic preganglionic neuron cell...Ch. 15 - Prob. 3DYKBCh. 15 - Prob. 4DYKBCh. 15 - Sympathetic division preganglionic axons travel to...Ch. 15 - Prob. 6DYKBCh. 15 - Prob. 7DYKBCh. 15 - A sympathetic postganglionic axon is a. long and...Ch. 15 - Prob. 9DYKBCh. 15 - Prob. 10DYKBCh. 15 - Prob. 11DYKBCh. 15 - For the following ganglia, identify the location...Ch. 15 - Prob. 13DYKBCh. 15 - Prob. 14DYKBCh. 15 - Prob. 15DYKBCh. 15 - Prob. 16DYKBCh. 15 - Prob. 17DYKBCh. 15 - What may occur with the mass activation of the...Ch. 15 - Prob. 19DYKBCh. 15 - Prob. 20DYKBCh. 15 - Prob. 1CALCh. 15 - Arlene was in a heightened state of alertness well...Ch. 15 - George has hypertension (high blood pressure). His...Ch. 15 - Prob. 4CALCh. 15 - Prob. 5CALCh. 15 - Prob. 1CSLCh. 15 - When you were younger, your parents may have told...Ch. 15 - Prob. 3CSL
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- Explain how vascular resistance and blood flow are regulated by (a) sympathetic adrenergic fibers, (b) sympathetic cholinergic fibers, and (c) parasympathetic fibers.arrow_forwardWhy, in physiological terms, does systolic blood pressure increase from rest to exercise and why would diastolic blood pressure remain relatively constant from rest to exercise? Discuss the roles of the nervous system, endocrine, and baroreceptorsarrow_forwardWhy would blocking the action of a vasoconstriction lower blood pressure?arrow_forward
- What effect will an increase in sympathetic activity have on heart rate, force of contraction, and arteriolar diameter?arrow_forwardWhat effect does sympathetic stimulation have on the heart?arrow_forwardWhat are the effects of sympathetic and parasympathetic nervous system on heart function, the mechanism behind sympathetic N.S. action (role of beta receptors)?arrow_forward
- Why is it possible for acetylcholine to actually cause an increase in stroke volume, even though increased parasympathetic activity causes an overall decrease in cardiac output?arrow_forwardWhat effect does sympathetic stimulation have on stroke volume if thevenous return remains constant? Dilation of the coronary blood vesselsoccurs in response to an increased heart rate and stroke volume. Explainthe functional advantage of that effect.arrow_forwardHow do parasympathetic and sympathetic impulses help control heart rate?arrow_forward
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