Fundamentals of Anatomy and Physiology - Package
10th Edition
ISBN: 9780133975437
Author: Martini
Publisher: PEARSON
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Chapter 20, Problem 21RQ
Cardiac output cannot increase indefinitely because (a) the available filling time becomes shorter as the heart rate increases, (b) the cardiovascular centers adjust the heart rate, (c) the rate of spontaneous depolarization decreases, (d) the ion concentrations of pacemaker plasma membranes decrease.
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Cardiac output cannot increase indefinitely because (a) available filling time becomes shorter as the heart rate increases. (b) the cardiac center adjusts the heart rate. (c) the rate of spontaneous depolarization decreases. (d) the ion concentrations surrounding pacemaker plasma membranes decrease.
If an individual has a heart rate of 80 bpm; end diastolic volume of 140 ml and end systolic
volume of 100 ml; calculate the cardiac output:
OA) 8,000 ml
B) 1,200 ml
O. C) 3,200 ml
OD) 4,000 ml
O E) 6,000 ml
The sequence of contraction of the heart chambers is (a) random, (b) left chambers followed by right chambers, (c) both atria followed by both ventricles, (d) right atrium, right ventricle, left atrium, left ventricle.
Chapter 20 Solutions
Fundamentals of Anatomy and Physiology - Package
Ch. 20 - Prob. 1CPCh. 20 - Prob. 2CPCh. 20 - Why is the left ventricle more muscular than the...Ch. 20 - Prob. 4CPCh. 20 - Which structure of the heart is known as the...Ch. 20 - 6. If the cells of the SA node did not function,...Ch. 20 - Why is it important for impulses from the atria to...Ch. 20 - Give the technical terms for heart contraction and...Ch. 20 - List the phases of the cardiac cycle.Ch. 20 - Is the heart always pumping blood when pressure in...
Ch. 20 - What could cause an increase in the size of the...Ch. 20 - Define cardiac output.Ch. 20 - Prob. 13CPCh. 20 - Prob. 16CPCh. 20 - Prob. 14CPCh. 20 - Prob. 15CPCh. 20 - Prob. 17CPCh. 20 - Prob. 18CPCh. 20 - Prob. 20CPCh. 20 - The great cardiac vein drains blood from the heart...Ch. 20 - The autonomic centers for cardiac function are...Ch. 20 - Prob. 5RQCh. 20 - Prob. 6RQCh. 20 - The heart is surrounded by the (a) pleural cavity,...Ch. 20 - The cardiac skeleton of the heart has which two of...Ch. 20 - Cardiac output is equal to the (a) difference...Ch. 20 - Identify the superficial structures in the...Ch. 20 - Identify the structures in the following diagram...Ch. 20 - During diastole, a chamber of the heart (a)...Ch. 20 - During the cardiac cycle, the amount of blood...Ch. 20 - What role do the chordae tendineae and papillary...Ch. 20 - Describe the three distinct layers that make up...Ch. 20 - What are the valves in the heart, and what is the...Ch. 20 - Trace the normal pathway of an electrical impulse...Ch. 20 - What is the cardiac cycle? What phases and events...Ch. 20 - What three factors regulate stroke volume to...Ch. 20 - The cells of the conducting system differ from the...Ch. 20 - Which of the following is longer? (a) the...Ch. 20 - If the papillary muscles fail to contract, (a) the...Ch. 20 - Cardiac output cannot increase indefinitely...Ch. 20 - Describe the function of the SA node in the...Ch. 20 - What are the sources and significance of the four...Ch. 20 - Differentiate between stroke volume and cardiac...Ch. 20 - What factors influence cardiac output?Ch. 20 - What effect does sympathetic stimulation have on...Ch. 20 - Describe the effects of epinephrine,...Ch. 20 - Vern is suffering from cardiac arrhythmias and is...Ch. 20 - Harvey has a heart murmur in his left ventricle...Ch. 20 - The following measurements were made on two...Ch. 20 - Prob. 31RQCh. 20 - Prob. 1CCCh. 20 - Prob. 2CC
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