HUMAN PHYSIOLOGY: AN INTEG ACCESS C
8th Edition
ISBN: 9780134714837
Author: Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 14, Problem 18RQ
List and briefly explain four types of information that an ECG provides about the heart.
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Draw a diagram of a normal electrocardiogram tracing. Name the individual waves and intervals, and indicate what each represents. Name some abnormalities that can be detected on an ECG tracing.
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Chapter 14 Solutions
HUMAN PHYSIOLOGY: AN INTEG ACCESS C
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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- Explain what the features of an ECG signal indicate.arrow_forwardDefine ECG? What are the differences between P-mitral and P-pulmonale? Please briefly explain at your own words.arrow_forwardWhat is the relation of Electrocardiogram components with Heart function. Please briefly explain at your own words.arrow_forward
- A normal patient has an ECG monitor attached to him/her as he/she starts exercises at the gym. The ECG recording shows a significant increase in heart rate to 220 beats/min after 20 minutes of strenuous exercise. What are the consequences and why? To answer this, be sure to address blood flow through the heart and what is happening to the blood flow, electrical impulses and pressures during each phase of the ECG (p,q,r,s,t).arrow_forwardDescribe and explain the normal ECG pattern.arrow_forwardExplain how an ECG tracing can be used for diagnostic purposes to evaluate a functioning heart? Explain how you would use a series of ECG tracing to monitor cardiac performance in an athlete? What changes would you see in the later?arrow_forward
- Draw a normal ECG pattern. Label and explain the significance of its deflection waves.arrow_forwardwhile a typical ECG tracing is shown, many things can alter and be perfectly normal for that individual. list some of the factors that change the standard tracing:.......?arrow_forwardDescribe the mechanical events of the cardiac cycle. (use terms like atrial systole, atrial diastole, ventricular diastole, ventricular systole, isovolumic ventricular contraction, isovolumic ventricular relaxation, ventricular ejection, period of rapid filling)arrow_forward
- Explain why it is sufficient to replace the ventricles, but not the atria,in artificial heart transplantation.arrow_forwardExplain the electrical and mechanical events in the cardiac cycle, including their relationship to the electrocardiogramarrow_forwardDraw a block schematic of the heart showing the four main chambers and explain how oxygenated and de-oxygenated blood flows to the lungs and arteries. You should include a labelled diagram of a typical electrocardiogram (ECG) and indicate how the primary features of the ECG relate to the state of the heart as it varies over the cycle.arrow_forward
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