Cardiac Muscle Cell

Cardiac Muscle Cell

A cardiac muscle cells or myocardiocytes (also known as cardiomyocytes or cardiac myocytes) are the muscle cells that make up the cardiac muscle. Each myocardial cell contains myofibrils, which are long chains of sarcomeres, the contractile units of muscle cells. Myocardiocytes show striations similar to those on skeletal muscle cells, but unlike multinucleated skeletal cells, they contain only one or two nuclei. Myocardiocytes have a high mitochondrial density, which allows them to produce ATP quickly, making them highly resistant to fatigue.