Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 14, Problem 7RA
Summary Introduction
To determine:
Effect of diameter of the vessel on blood flow.
Introduction:
Blood is a major transportation agent in the human body. It helps transport hemoglobin, electrolyte, protein and even hormones. The increase in lumen of blood vessels is called vasodilation. Resistance is the major cause to abrupt the flow of blood and if the resistance reduces, blood flow will increase.
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If a vessel were to dilate to twice its previous radius, and if pressure remained constant, blood flow through this vessel would a.increase by a factor of 16. b.increase by a factor of 4. c.increase by a factor of 2. d.decrease by a factor of 2.
Which of the choices below best describes the systemic circulation of blood?a. The flow of blood into the right atrium and eventually out of the left ventricle.b. The movement of blood from the pulmonary trunk, through capillaries into the pulmonary veins.c. The movement of blood into the coronary arteries, through capillaries into the coronary sinus.d. The movement of blood from the aorta, through arteries and capillaries and then eventually to the vena cavae.
If the diameter of a blood vessel is reduced by two-thirds and the blood pressure remains constant (that is, the blood pressure is unchanging as the diameter is reduced), then the blood flow rate through the vessel will ...
A.
be reduced by 80/81.
B.
be reduced by 8/9 since the area of a circle is πr2.
C.
be reduced by 1/9 since the area of a circle is πr2.
D.
be reduced by 2/3.
E.
be unchanged since the blood pressure does not change.
Chapter 14 Solutions
Human Physiology
Ch. 14 - Prob. 1CPCh. 14 - Prob. 2aCPCh. 14 - Describe how the stroke volume is intrinsically...Ch. 14 - Define the terms preload and afterload and explain...Ch. 14 - Prob. 3CPCh. 14 - Prob. 4aCPCh. 14 - Define the term edema and describe four different...Ch. 14 - Prob. 5aCPCh. 14 - Prob. 5bCPCh. 14 - Prob. 5cCP
Ch. 14 - Prob. 6aCPCh. 14 - Prob. 6bCPCh. 14 - Prob. 7aCPCh. 14 - Prob. 7bCPCh. 14 - Define autoregulation and explain how this process...Ch. 14 - Describe blood flow and oxygen delivery to the...Ch. 14 - Prob. 9aCPCh. 14 - Describe the mechanisms that produce vasodilation...Ch. 14 - Prob. 9cCPCh. 14 - Define the term autoregulation and describe how...Ch. 14 - Prob. 10bCPCh. 14 - Prob. 11CPCh. 14 - Prob. 12aCPCh. 14 - Prob. 12bCPCh. 14 - Prob. 13aCPCh. 14 - Prob. 13bCPCh. 14 - Prob. 14CPCh. 14 - Prob. 15aCPCh. 14 - Prob. 15bCPCh. 14 - Prob. 15cCPCh. 14 - Prob. 16CPCh. 14 - Prob. 1RACh. 14 - In the absence of compensations, the stroke volume...Ch. 14 - Prob. 3RACh. 14 - Prob. 4RACh. 14 - Prob. 5RACh. 14 - Prob. 6RACh. 14 - Prob. 7RACh. 14 - The sounds of Korotkoff are produced by...Ch. 14 - Prob. 9RACh. 14 - Blood flow in the coronary circulation...Ch. 14 - Prob. 11RACh. 14 - Prob. 12RACh. 14 - Prob. 13RACh. 14 - Prob. 14RACh. 14 - Prob. 15RACh. 14 - Blood pressure is lowest in
Ch. 14 - Prob. 17RACh. 14 - Prob. 18RACh. 14 - Prob. 19RACh. 14 - The pulse pressure is a measure of
Ch. 14 - Define the terms contractilily, preload, and...Ch. 14 - Prob. 22RACh. 14 - Which part of the cardiovascular system contains...Ch. 14 - Prob. 24RACh. 14 - Prob. 25RACh. 14 - Prob. 26RACh. 14 - Prob. 27RACh. 14 - Prob. 28RACh. 14 - Prob. 29RACh. 14 - Prob. 30RACh. 14 - Prob. 31RACh. 14 - Prob. 32RACh. 14 - Prob. 33RACh. 14 - Prob. 34RACh. 14 - Prob. 35RACh. 14 - Prob. 36RACh. 14 - Prob. 37RACh. 14 - As described in chapter 8, functional magnetic...Ch. 14 - Prob. 39RACh. 14 - Athletes often have a slower resting cardiac rate...Ch. 14 - Prob. 41RACh. 14 - Prob. 42RACh. 14 - Prob. 43RACh. 14 - Prob. 44RACh. 14 - Prob. 45RACh. 14 - Prob. 46RA
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