[Answer] What type of muscle forms most of the heart?

Answer: cardiac
What type of muscle forms most of the heart?

The endocardium is the innermost layer of tissue that lines the chambers of the heart. Its cells are embryologically and biologically similar to the endothelial cells that line blood vessels. The endocardium also provides protection to the valves and heart chambers.

Cardiac muscle tissue or myocardium forms the bulk of the heart. The heart wall is a three-layered structure with a thick layer of myocardium sandwiched between the inner endocardium and the outer epicardium (also known as the visceral pericardium). The inner endocardium lines the cardiac chambers covers the cardiac valves and joins with the endothelium that lines the blood vessels that connect to the heart. On the outer aspect of the myocardium is the epicardiumwhich forms …

A cardiac muscle ( heart muscle) is one of the three main types of muscle in vertebrates. It is involuntary: a person cannot control it consciously. Also it is a striped muscle in the walls of the heart. It makes up the tissue called the myocardium. The other types of muscle are the skeletal and smooth muscle.

There are three types of these muscles. The third type the papillary muscles give origin at their apices to the chordae tendinae which attach to the cusps of the tricuspid valve and to the mitral valve. The mass of the left ventricle as estimated by magnetic resonance imaging averages 143 g ± 38.4 g with a range of 87 –224 g.

The heart is a muscular organ in most animals which pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body while carrying metabolic waste such as carbon dioxide to the lungs. In humans the heart is approximately the size of a closed fist and is located between the lungs in the middle compartment of the…

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