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Myocardium is the muscular tissue of the heart. Other tissues are the endocardium (inner lining, effectively a specialised endothelium) and the pericardium (a connective tissue layer around the heart).The myocardium is composed of specialized cardiac muscle cells which do not resemble muscle tissue elsewhere in the body. Cardiac muscle has the property of contraction, like other muscles, and also electrical conduction, like nerves.
The blood supply of the myocardium is by the coronary arteries. If these arteries are occluded by atherosclerosis and/or thrombosis, this can lead to angina pectoris or myocardial infarction.
Certain virusus lead to inflammation of the myocardium, or myocarditisIn medicine ( cardiology), myocarditis is inflammation of the myocardium, the muscular part of the heart. It is generally due to infection ( viral or bacterial). Signs and symptoms The signs and symptoms associated with myocardits are varied, and relate e.
Failure of the heart to contract properly (for various reasons) are termed heart failure, generally leading to fluid retention , oedema, pulmonary oedema, renal insufficiency, hepatomegaly , a shortened life expectancyIn demography, life expectancy is a statistical measure of the average, or mathematical expected value, of the remaining lifetime of an individual in the given group. For non-human organisms the term lifespan is often used to indicate the average length o and decreased quality of lifeThe well-being or quality of life of a population is an important concern in economics and political science. There are many components to well-being. A large part is standard of living, the amount of money and access to goods and services that a person h.
Cardiac anatomy
