Fundamentals of Anatomy & Physiology, Custom edition for Houston Community College Northwest, Volume 1, Includes student access code card
18th Edition
ISBN: 9781323627983
Author: Martini, Nath, Bartholomew
Publisher: PEARSON
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Question
Chapter 20, Problem 31RQ
Summary Introduction
To determine:
The effect of the drug Verapamil, on Karen’s stroke volume.
Introduction:
The stroke volume denoted as SV refers to the amount of blood that is pumped out of a ventricle at the time of every contraction. Contractility is defined as the amount of force that is formed at the time of contraction, at preload. Contractility, under normal conditions can be altered by the circulating hormones and autonomic innervations or drugs. Verapamil is one of the drugs that block the calcium ion channels in the cardiac cells.
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Chapter 20 Solutions
Fundamentals of Anatomy & Physiology, Custom edition for Houston Community College Northwest, Volume 1, Includes student access code card
Ch. 20 - Prob. 1CPCh. 20 - Prob. 2CPCh. 20 - Why is the left ventricle more muscular than the...Ch. 20 - Define autorhythmicity.Ch. 20 - Which structure of the heart is known as the...Ch. 20 - Prob. 6CPCh. 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. 14CPCh. 20 - Prob. 15CPCh. 20 - Prob. 16CPCh. 20 - Prob. 17CPCh. 20 - The great cardiac vein drains blood from the heart...Ch. 20 - The autonomic centers for cardiac function are...Ch. 20 - Prob. 3RQCh. 20 - The simple squamous epithelium covering the heart...Ch. 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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