GENERAL ANATOMY
ANATOMY OF THE HEART
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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muscular portion of cardiac wall
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large artery that carries blood from the right ventricles
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blood vessel in which openings to the coronary arteries are located
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valvular restraints that prevent the atrioventricular valve cusps from being forced back into the atria
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Detailed explanation-1: -The muscles of the heart, termed the myocardium, make up the middle and thickest layer of the heart wall. This layer lies between the single-cell endocardium layer, which lines the inner chambers, and the outer epicardium, which makes up part of the pericardium that surrounds and protects the heart.
Detailed explanation-2: -The myocardium is the middle layer of the heart. It is the heart muscle and is the thickest layer of the heart.
Detailed explanation-3: -Cardiac muscle cells are located in the walls of the heart, appear striped (striated), and are under involuntary control.
Detailed explanation-4: -cardiac muscle, also called myocardium, in vertebrates, one of three major muscle types, found only in the heart.
Detailed explanation-5: -The myocardium is thickest in the left ventricle, as the left ventricle must create a lot of pressure to pump blood into the aorta and throughout systemic circulation.