HUMAN PHYSIOLOGY: AN INTEG ACCESS C
8th Edition
ISBN: 9780134714837
Author: Silverthorn
Publisher: PEARSON
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Chapter 14, Problem 6RQ
Summary Introduction
Introduction: There are three types of muscle fibers: skeletal muscle, smooth muscles, and cardiac muscles. Cardiac muscles are involuntary muscles. These make the tissues of the heart called myocardial tissues.
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Repolarization of ventricular myocardiocytes is caused by ______ the cells through voltage-gated channels.
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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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- The finest passages through which electrical signals pass before reaching the ventricular cardiocytes are called _____.arrow_forwardThe endocardium is composed of __________. A collagen fibers and the lumen B myocardiocytes C a think layer of flat epithelial cells D cardiac muscle cellsarrow_forwardAfter a period of time without oxygen, the myocardium will undergo necrosis, a condition of __________ of the cells.arrow_forward
- The myocardium of the ____________ ventricle is normally thickest. left rightarrow_forwardCoronary vessels - these supply the heart with a blood supply of its own. -They can be seen in the long groove running down the ventricles on the ventral side of the heart. not reproduce. B. INTERNAL ANATOMY Personal Locate the following structures: foroven The tricuspid valve located between the right atrium and right ventricle. Why is it named as it is? use What does it do in the heart? The endocardium - this is the tissue that lines the heart. Find the papillary muscles in the left and right ventricles and the taut, chordae tendineae. What is their function? only, d Personel use only, do not rep o 2021 04-11 The bicuspid (mitral) valve - the left atrium and left ventricle.roduce. emayato@grnai.comarrow_forwardDuring the cardiac cycle, the blood flow in the coronary blood vessels is oppositeto that of the vasculature in the rest of the body. Explain this concept.arrow_forward
- The abnormal narrowing of a blood vessel is ____________________.arrow_forwardIn a sheet of ventricular cardiac muscle tissue, we should be able to observe electricity spreading between adjacent muscle cells (TRUE or FALSE) and from Purkinje fibers to muscle cells (TRUE or FALSE) via electrical synapses that form between the cell membranes.arrow_forwardvisceral pericardium endocardium myocardium parietal pericardium pericardial cavity The heart is covered by a pericardial sac. The outer layer of the sac is fibrous connective tissue layer called the The is a serous connective tissue layer that's directly adhered to the heart's surface. Between these two layers is the , which is filled with pericardial fluid and serves to cushion the heart. The is the thick muscular layer of the heart that makes-up the bulk of the chamber walls. It is thicker in heart chambers that pump blood farther distances, such as the left ventricle, and thinner in the atria that do not pump blood very long distances. The innermost heart layer is the , which has a slippery surface to prevent blood from sticking to the heart chamber walls.arrow_forward
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