EBK HUMAN PHYSIOLOGY
EBK HUMAN PHYSIOLOGY
8th Edition
ISBN: 9780134704227
Author: Silverthorn
Publisher: YUZU
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Chapter 14, Problem 23RQ
Summary Introduction

To determine: The physiological justification of the treatment for atrial fibrillation and the reason for the harmful effects of rapid atrial depolarization.

Introduction: In the new treatment of atrial fibrillation, high voltage electric impulse is administrated to control the rapid rate at senatorial (SA) node and destroy the autorhythmic cells of the atrioventricular (AV) node. After that, the ventricular pacemaker is implanted in the patient.

Summary Introduction

To determine: The reason for the destruction of the atrio-ventricular (AV) node in the procedure to treat atrial fibrillation.

Introduction: Cardiac muscles fiber of heart joins with each other to form a network. This network of muscle fiber is called myocardium. The muscles of the heart are involuntary and do not get tired. Therefore, the action potential of myocardial muscle is different from other muscle fibers.

Summary Introduction

To determine: The reason for the implantation of a pacemaker in the procedure to treat atrial fibrillation.

Introduction: Cardiac muscles fiber of the heart joins with each other to form a network. This network of muscle fiber is called myocardium. All the myocardial muscles generate action potential simultaneously to initiate electrical conduction the heart.

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Chapter 14 Solutions

EBK HUMAN PHYSIOLOGY

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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