EBK HUMAN PHYSIOLOGY
7th Edition
ISBN: 9780133983401
Author: Silverthorn
Publisher: YUZU
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Textbook Question
Chapter 14, Problem 18CC
Do you think that the Ca2+ channels in autorhythmic cells are the same as the Ca2+ channels in contractile cells? Defend your answer.
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Which type of cells allow cardiac muscles to act as a unit?
Group of answer choices
Autoplasmic cells
Autoimmune cells
Automotor cells
Autorhythmic cells
Select the correct answer for each question. Explain why you chose that answer as opposed to the others. In other words, explain why the other choices are incorrect.
The plateau phase of an action potential in cardiac muscle cells is due to the _____.
Efflux of K+ through K+ channels
Efflux of Ca2+ through fast Ca2+ channels
Influx of Ca2+ through slow Ca2+ channels
Influx of Na+ through fast Na+ channels
PLEASE use in your own words and NOT outside sources just provide the answer itself in brief sentences thank you!
1. Calcium Channel Blockers (CCB) can help alleviate high blood pressure. a. How would CCB affect vascular smooth muscle contraction? And total peripheral resistance?
Chapter 14 Solutions
EBK HUMAN PHYSIOLOGY
Ch. 14 - A cardiovascular system has what three major...Ch. 14 - What is the difference between (a) the pulmonary...Ch. 14 - Which is more important for determining flow...Ch. 14 - The two identical tubes below have the pressures...Ch. 14 - All four tubes below have the same driving...Ch. 14 - Two canals in Amsterdam are identical in size, but...Ch. 14 - What prevents electrical signals from passing...Ch. 14 - Prob. 8CCCh. 14 - Prob. 9CCCh. 14 - Compare the receptors and channels involved in...
Ch. 14 - If a myocardial contractile cell is placed in...Ch. 14 - A drug that blocks all Ca2+ channels in the...Ch. 14 - Which ions moving in what directions cause the...Ch. 14 - At the molecular level, what is happening during...Ch. 14 - Lidocaine is a molecule that blocks the action of...Ch. 14 - What does increasing K+ permeability do to the...Ch. 14 - A new cardiac drug called ivabradine selectively...Ch. 14 - Do you think that the Ca2+ channels in...Ch. 14 - What happens to the action potential of a...Ch. 14 - In an experiment, the vagus nerve, which carries...Ch. 14 - Name two functions of the AV node. What is the...Ch. 14 - Prob. 22CCCh. 14 - Occasionally an ectopic pacemaker {ktopos, out of...Ch. 14 - Prob. 24CCCh. 14 - Which chamberatrium or ventriclehas higher...Ch. 14 - Prob. 26CCCh. 14 - Prob. 27CCCh. 14 - Prob. 28CCCh. 14 - Prob. 29CCCh. 14 - Why does ventricular pressure shoot up suddenly at...Ch. 14 - Prob. 31CCCh. 14 - Prob. 32CCCh. 14 - 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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