Human Anatomy
5th Edition
ISBN: 9780073403700
Author: Kenneth S. Saladin Dr.
Publisher: McGraw-Hill Education
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Chapter 20, Problem 1TYC
Summary Introduction
Case summary:
Mr. J dies of a massive myocardial infarction which is triggered by coronary thrombosis. After an autopsy, necrotic myocardium is found in the lateral and posterior right ventricle and posterior interventricular septum.
Adequate information:
The muscular wall of the heart is known as myocardium. It helps in contraction and relaxation of the heart muscle the contraction of muscles results in pumping the blood out of the heart, whereas relaxation of muscle results in a refill of the chamber of the heart. The myocardium is composed of two membranes epicardium (outer membrane) and endocardium (inner membrane).
To determine:
The place of occurrence of thrombosis in the coronary circulation.
Given Information:
The person dies of myocardial infarction. After an autopsy, the reason for myocardial infarction is found as necrotic myocardium. It blocks the lateral and posterior right ventricle and posterior interventricular septum.
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Select the best answer or answers from the choices given: In the heart, which of the following apply? (1) Action potentials are conducted from cell to cell across the myocardium via gap junctions, (2) the SA node sets the pace for the heart as a whole, (3) spontaneous depolarization of cardiac cells can occur in the absence of nerve stimulation, (4) cardiac muscle can continue tocontract for long periods in the absence of oxygen. (a) all of the above, (b) 1, 3, 4, (c) 1, 2, 3, (d) 2, 3.
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Chapter 20 Solutions
Human Anatomy
Ch. 20.1 - Answer the following questions to test you...Ch. 20.2 - Parts of the fibrous skeleton sometimes become...Ch. 20.2 - Prob. 3BYGOCh. 20.2 - Prob. 4BYGOCh. 20.2 - Answer the following questions to test you...Ch. 20.3 - Answer the following questions to test you...Ch. 20.3 - Prob. 7BYGOCh. 20.3 - Prob. 8BYGOCh. 20.3 - Answer the following questions to test you...Ch. 20.4 - Why should mitochondria be large and more abundant...
Ch. 20.4 - Answer the following questions to test you...Ch. 20.4 - Answer the following questions to test you...Ch. 20.4 - Prob. 12BYGOCh. 20.4 - Prob. 13BYGOCh. 20.4 - Prob. 14BYGOCh. 20.5 - Answer the following questions to test you...Ch. 20.5 - Answer the following questions to test you...Ch. 20.5 - Prob. 17BYGOCh. 20.5 - Answer the following questions to test you...Ch. 20 - Prob. 20.1.1AYLOCh. 20 - Prob. 20.1.2AYLOCh. 20 - Prob. 20.1.3AYLOCh. 20 - To test your knowledge, discuss the following...Ch. 20 - To test your knowledge, discuss the following...Ch. 20 - Prob. 20.1.6AYLOCh. 20 - Prob. 20.2.1AYLOCh. 20 - Prob. 20.2.2AYLOCh. 20 - Prob. 20.2.3AYLOCh. 20 - Reasons for the differences in muscularity between...Ch. 20 - Prob. 20.2.5AYLOCh. 20 - Prob. 20.2.6AYLOCh. 20 - The names, locations, and anatomy of the two...Ch. 20 - Prob. 20.2.8AYLOCh. 20 - Prob. 20.2.9AYLOCh. 20 - Prob. 20.2.10AYLOCh. 20 - Prob. 20.3.1AYLOCh. 20 - Prob. 20.3.2AYLOCh. 20 - Prob. 20.3.3AYLOCh. 20 - Prob. 20.3.4AYLOCh. 20 - Prob. 20.4.1AYLOCh. 20 - Prob. 20.4.2AYLOCh. 20 - Prob. 20.4.3AYLOCh. 20 - The Coronary Conduction System and Cardiac...Ch. 20 - Prob. 20.4.5AYLOCh. 20 - Prob. 20.5.1AYLOCh. 20 - Prob. 20.5.2AYLOCh. 20 - Prob. 20.5.3AYLOCh. 20 - Prob. 20.5.4AYLOCh. 20 - Prob. 20.5.5AYLOCh. 20 - Prob. 1TYRCh. 20 - To get from the right atrium to the right...Ch. 20 - There is/are_________ pulmonary vein(s) emptying...Ch. 20 - Prob. 4TYRCh. 20 - Prob. 5TYRCh. 20 - These are some of the points that the blood passes...Ch. 20 - The ascending aorta and pulmonary trunk develop...Ch. 20 - Prob. 8TYRCh. 20 - Blood in the anterior interventricular branch of...Ch. 20 - Which of these is not characteristic of the heart...Ch. 20 - Prob. 11TYRCh. 20 - The circulatory route from aorta to the venae...Ch. 20 - The circumflex branch of the left coronary artery...Ch. 20 - The finest passages through which electical...Ch. 20 - Electrical signal pass quickly from one...Ch. 20 - The abnormal bulging of the left AV valve into the...Ch. 20 - Prob. 17TYRCh. 20 - Prob. 18TYRCh. 20 - Prob. 19TYRCh. 20 - Prob. 20TYRCh. 20 - Prob. 1BYMVCh. 20 - Prob. 2BYMVCh. 20 - Prob. 3BYMVCh. 20 - Prob. 4BYMVCh. 20 - Prob. 5BYMVCh. 20 - Prob. 6BYMVCh. 20 - Prob. 7BYMVCh. 20 - Prob. 8BYMVCh. 20 - Prob. 9BYMVCh. 20 - Prob. 10BYMVCh. 20 - Prob. 1TOFCh. 20 - Prob. 2TOFCh. 20 - Prob. 3TOFCh. 20 - Prob. 4TOFCh. 20 - Briefly explain why each of the following...Ch. 20 - Prob. 6TOFCh. 20 - Briefly explain why each of the following...Ch. 20 - Prob. 8TOFCh. 20 - Prob. 9TOFCh. 20 - Prob. 10TOFCh. 20 - Prob. 1TYCCh. 20 - Becky, age 2, was born with a hole in her...Ch. 20 - Prob. 3TYCCh. 20 - Prob. 4TYCCh. 20 - Prob. 5TYC
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- Select the best answer or answers from the choices given: An ECG provides information about (a) cardiac output, (b) movement of the excitation wave across the heart, (c) coronary circulation, (d) valve impairment.arrow_forwardWhat is the cause of a myocardial infarctarrow_forwardSelect the best answer or answers from the choices given: The myocardium receives its blood supply directly from the (a) aorta, (b) coronary arteries, (c) coronary sinus, (d) pulmonary arteries.arrow_forward
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