Anatomy and Physiology - With CD and Atlas and Lab. Man.
5th Edition
ISBN: 9780321952806
Author: Marieb
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 11CYU
Suppose you are in a bicycle race. What happens to the smooth muscle in the arterioles supplying your leg muscles? What is the key mechanism in this case?
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Chapter 18 Solutions
Anatomy and Physiology - With CD and Atlas and Lab. Man.
Ch. 18 - Which branch of the autonomic nervous system...Ch. 18 - When vascular smooth muscle contracts, what...Ch. 18 - Name the type of artery that matches each...Ch. 18 - Prob. 4CYUCh. 18 - Prob. 5CYUCh. 18 - In the systemic circuit, which contains more...Ch. 18 - List three factors that determine resistance in a...Ch. 18 - Suppose vasoconstriction decreases the diameter of...Ch. 18 - Prob. 9CYUCh. 18 - The kidneys play an important role in maintaining...
Ch. 18 - Suppose you are in a bicycle race. What happens to...Ch. 18 - If many arterioles in your body dilated at once,...Ch. 18 - Prob. 13CYUCh. 18 - Your neighbor, Bob, calls you because he thinks he...Ch. 18 - Prob. 15CYUCh. 18 - Prob. 16CYUCh. 18 - Prob. 17CYUCh. 18 - You are assessing the circulation in the leg of a...Ch. 18 - In what important way does the area drained by the...Ch. 18 - Prob. 20CYUCh. 18 - Prob. 21CYUCh. 18 - Name the leg veins that often become varicosed.Ch. 18 - Prob. 23CYUCh. 18 - Which statement does not accurately describe...Ch. 18 - Smooth muscle in the blood vessel wall (a) is...Ch. 18 - Peripheral resistance (a) is inversely...Ch. 18 - Which of the following can lead to decreased...Ch. 18 - Prob. 5RQCh. 18 - Prob. 6RQCh. 18 - The structure of a capillary wall differs from...Ch. 18 - Prob. 8RQCh. 18 - The myocardium receives its blood supply directly...Ch. 18 - Blood flow in the capillaries is steady despite...Ch. 18 - Prob. 11RQCh. 18 - Prob. 12RQCh. 18 - Prob. 13RQCh. 18 - Prob. 14RQCh. 18 - How is the anatomy of capillaries and capillary...Ch. 18 - Prob. 16RQCh. 18 - Write an equation showing the relationship between...Ch. 18 - Prob. 18RQCh. 18 - Describe the neural mechanisms responsible for...Ch. 18 - Explain the reasons for the observed changes in...Ch. 18 - Prob. 21RQCh. 18 - Prob. 22RQCh. 18 - How are nutrients, wastes, and respiratory gases...Ch. 18 - Prob. 24RQCh. 18 - Physiologists often consider capillaries and...Ch. 18 - Mr. Hutchinson, another middle-aged victim of the...Ch. 18 - Mr. Hutchinson, another middle-aged victim of the...Ch. 18 - Mr. Hutchinson, another middle-aged victim of the...
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- Discuss how contraction and relaxation of arteriolar vascular smooth muscle regulates peripheral blood flow.arrow_forwardDescribe the functional significance of the skeletal muscle pump and illustrate the action ofvenous valves.arrow_forwardCompare the structure and function of arteries and veins, and the significance of the skeletal muscle pumps.arrow_forward
- How does excitation–contraction coupling in cardiac muscle resemble that of skeletal muscle? How is it different?arrow_forward_____Myocardial muscles are located in the walls of internal organs such as the digestive tract, blood vessels, and ducts leading from glands.arrow_forwardFollowing a large increase in sympathetic output from the vasomotor center, what tissues will get less blood (increased resistance, reduced flow), and which ones will continue to get plenty of flow? How is sympathetic control of skeletal muscle arterioles different from other vascular beds?arrow_forward
- The entry of calcium into a ventricular muscle cell helps to maintain depolarization of the membrane during the plateau phase of the action potential, but this calcium also performs what other function?arrow_forwardDiscuss the importance of smooth muscle cells present in the aorta and all arteries.arrow_forwardVentricular Contractility increases in response to circulating Epinephrine. What factor is responsible for this increase in the force of the contraction?arrow_forward
- Reduction in the lumen diameter of a blood vessel as the smooth muscle contracts is known as __________. A arteriosclerosis B atherosclerosis C vasodilation D vasoconstriction E varicose veinsarrow_forwardDescribe the structure of intercalated discs in cardiac musclecells, and briefly discuss their functions.arrow_forward
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