Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 14, Problem 5RQ
Summary Introduction
Introduction: Heart pumps the oxygenated blood in the body with the help of arteries and arterioles. Veins carry deoxygenated blood to the heart. The flow of blood though the blood vessels depend upon three factors: peripheral resistance, the diameter of the blood vessels, and volume of the blood.
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Vasodilation of blood vessels to the kidneys is due to________.a. more frequent action potentialsb. less frequent action potentials
Which of these is a vasoconstrictor? a. nitric oxide b. natriuretic hormone c. bradykinin d. angiotensin II
Vasodilation is a widening of the lumen of a blood vessel due to smooth muscle relaxation.
True
False
Chapter 14 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 14.1 - A cardiovascular system has what three major...Ch. 14.1 - What is the difference between (a) the pulmonary...Ch. 14.2 - Which is more important for determining flow...Ch. 14.2 - The two identical tubes below have the pressures...Ch. 14.2 - All four tubes below have the same driving...Ch. 14.2 - Two canals in Amsterdam are identical in size, but...Ch. 14.3 - What prevents electrical signals from passing...Ch. 14.3 - Prob. 8CCCh. 14.3 - Prob. 9CCCh. 14.3 - Compare the receptors and channels involved in...
Ch. 14.3 - If a myocardial contractile cell is placed in...Ch. 14.3 - A drug that blocks all Ca2+ channels in the...Ch. 14.3 - Which ions moving in what directions cause the...Ch. 14.3 - At the molecular level, what is happening during...Ch. 14.3 - Lidocaine is a molecule that blocks the action of...Ch. 14.3 - What does increasing K+ permeability do to the...Ch. 14.3 - A new cardiac drug called ivabradine selectively...Ch. 14.3 - Do you think that the Ca2+ channels in...Ch. 14.3 - What happens to the action potential of a...Ch. 14.3 - In an experiment, the vagus nerve, which carries...Ch. 14.4 - Name two functions of the AV node. What is the...Ch. 14.4 - Prob. 22CCCh. 14.4 - Occasionally an ectopic pacemaker {ktopos, out of...Ch. 14.4 - Prob. 24CCCh. 14.4 - Which chamberatrium or ventriclehas higher...Ch. 14.4 - Prob. 26CCCh. 14.4 - Prob. 27CCCh. 14.4 - Prob. 28CCCh. 14.4 - Prob. 29CCCh. 14.4 - Why does ventricular pressure shoot up suddenly at...Ch. 14.4 - Prob. 31CCCh. 14.4 - Prob. 32CCCh. 14.4 - A persons aortic valve opening has become...Ch. 14 - What contributions to understanding the...Ch. 14 - List three functions of the cardiovascular system.Ch. 14 - Prob. 3RQCh. 14 - Prob. 4RQCh. 14 - Prob. 5RQCh. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - Distinguish between the two members of each of the...Ch. 14 - Prob. 9RQCh. 14 - Prob. 10RQCh. 14 - What is the proper term for each of the following?...Ch. 14 - List the events of the cardiac cycle in sequence,...Ch. 14 - Prob. 13RQCh. 14 - Compare and contrast the structure of a cardiac...Ch. 14 - Prob. 15RQCh. 14 - Correlate the waves of an ECG with mechanical...Ch. 14 - Prob. 17RQCh. 14 - List and briefly explain four types of information...Ch. 14 - Define inotropic effect. Name two drugs that have...Ch. 14 - Prob. 20RQCh. 14 - Police Captain Jeffers has suffered a myocardial...Ch. 14 - Prob. 22RQCh. 14 - Prob. 23RQCh. 14 - Police Captain Jeffers in question 21 has an...Ch. 14 - Prob. 25RQCh. 14 - Prob. 26RQCh. 14 - Prob. 27RQCh. 14 - A person has a total blood volume of 5 L. Of this...
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- Lower-than-normal blood pressure is called _______________________.arrow_forwardThe vessel layer that has a direct role in vasoconstriction is the __________. A tunica intima B tunica externa C tunica mediaarrow_forwardExplain the concept of Vasoconstriction and vasodilatation and the impact that preload and afterload has on them.arrow_forward
- If Nitric oxide is a vasodilator, discuss how it is able to lower blood pressure.arrow_forwardWhen the tempreture drops for the human skin "for example if I touch something cold or ice" , vasoconstration or vasodilation occures?arrow_forwardNervi vasorum control ________.a. vasoconstrictionb. vasodilationc. capillary permeabilityd. both vasoconstriction and vasodilationarrow_forward
- b) What effect does vasodilation have on blood pressure? Explain why. How will her body try to bring her blood pressure back to homeostasis? Be detailed in your explanation and support your answer with facts from your textbook, research, and articles from scholarly journals. In addition, remember to add references in APA format to your posts to avoid plagiarism.arrow_forwardIndicate which of the following involves filtration by answering yes or no Blood pressure forces water molecules from the blood outward through the thin wall of a bloodcapillary.___________arrow_forward
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