EBK HUMAN PHYSIOLOGY
8th Edition
ISBN: 9780134704227
Author: Silverthorn
Publisher: YUZU
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Textbook Question
Chapter 14.4, Problem 33CC
A person’s aortic valve opening has become constricted, creating a condition known as aortic stenosis. Which ventricle is affected by this change? What happens to the afterload on this ventricle?
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Chapter 14 Solutions
EBK HUMAN PHYSIOLOGY
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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- During a cardiac angiogram, it is discovered that a 58-year-old patient has moderate stenosis of the left circumflex artery. Which chamber of the heart would be impacted by this blockage?arrow_forwardDr. J was performing a cardiac bypass on her 53-year-old male patient whose anterior interventricular artery was narrowed near its origin. For this procedure, she chose to use the left internal thoracic artery, leaving its origin intact and cutting its distal connection to attach it to the anterior interventricular artery just beyond the narrowed segment. This successfully restored blood flow to the anterior portion of the heart. What path does the blood take through this diverted route? Aortic arch to axillary artery to internal thoracic artery. O Aortic arch to the left subclavian to internal thoracic artery Aortic arch to left subclavian artery to pericardiacophernic artery to internal thoracic artery Aortic arch to brachiocephalic artery to internal thoracic artery Aortic arch to internal thoracic arteryarrow_forwardmr. Holmes, a 72-year-old Caucasian male, suffered a heart attack which resulted in damage to a papillary muscle holding down the mitral valve. As a result the mitral valve is prolapsing with each heartbeat, which enables the backflow of blood. Where is this blood back flowing to? left ventricle, left atrium, or the aorta.arrow_forward
- Which part of the intrinsic conduction system directly excites ventricular myocardial cells? In which direction does the depolarization wave travel across the ventricles?arrow_forwardInflammation of the pericardium can lead to a condition called pericardial effusion, in which fluids collect in the space surrounding the heart. What effect would this have on the functioning of the heart? How might the condition be treated?arrow_forwardif the impulse is coming inferiorly from the SA node then how do the ventricles contract inferior to superior?arrow_forward
- In dilated cardiomyopathy of the left ventricle, the ventricle can become enormously enlarged. Explain why this might lead to regurgitation of blood through the mitral valve (blood flowing from the ventricle back into the left atrium) during ventricular systole?arrow_forwardDuring a lethal heart attack, a blood clot lodges in the first part of the circumflex branch of the left coronary artery, blocking blood flow through this vessel. What regions of the heart will become ischemic and die?arrow_forward
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