11 Facts About Heart muscle

Cardiac muscle is one of three types of vertebrate muscle tissues, with the other two being skeletal muscle and smooth muscle.

Cardiac Heart muscle cells called cardiomyocytes are the contractile myocytes of the cardiac Heart muscle.

Cardiac muscle cells are the contracting cells that allow the heart to pump.

Individual cardiac Heart muscle cells are joined at their ends by intercalated discs to form long fibers.

Cardiac Heart muscle cells contain many mitochondria which provide the energy needed for the cell in the form of adenosine triphosphate, making them highly resistant to fatigue.

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T-tubules in cardiac Heart muscle are bigger and wider than those in skeletal Heart muscle, but fewer in number.

Matrix in immediate contact with the Heart muscle cells is referred to as the basement membrane, mainly composed of type IV collagen and laminin.

The primary function of both Heart muscle types is to contract, and in both cases, a contraction begins with a characteristic flow of ions across the cell membrane known as an action potential.

Olaf Bergmann and his colleagues at the Karolinska Institute in Stockholm tested samples of heart muscle from people born before 1955 who had very little cardiac muscle around their heart, many showing with disabilities from this abnormality.

Diseases affecting cardiac Heart muscle, known as cardiomyopathies, are the leading cause of death in developed countries.

Significant damage to cardiac Heart muscle cells is referred to as myocytolysis which is considered a type of cellular necrosis defined as either coagulative or colliquative.