Cardiac muscle tissue makes up the muscle that surrounds the heart. Unlike skeletal muscles, the role of the muscle is to cause the mechanical motion of pumping blood throughout the rest of the body. The movement is involuntary in order to sustain life.
The heart is mostly composed of cardiac muscle cells (or myocardium). Two of its most noticeable characteristics are the contractility of the heart, which serves as the foundation for its pumping function, and the rhythmicity of the contraction.
Cardiac muscle tissue makes up the muscle that surrounds the heart. Unlike skeletal muscles, the role of the muscle is to cause the mechanical motion of pumping blood throughout the rest of the body. The movement is involuntary in order to sustain life.
The heart is mostly composed of cardiac muscle cells (or myocardium). Two of its most noticeable characteristics are the contractility of the heart, which serves as the foundation for its pumping function, and the rhythmicity of the contraction.