What is the term for the heart muscle?

The heart muscle is specifically referred to as cardiac muscle. This type of muscle is unique and is responsible for the pumping action of the heart, which is crucial for circulating blood throughout the body. Cardiac muscle cells are specialized to contract continuously and rhythmically, which is essential for maintaining a consistent heartbeat.

While involuntary muscle accurately describes cardiac muscle since it operates without conscious control, the term "cardiac muscle" is more specific and correct for identifying the heart itself. Skeletal muscle, on the other hand, is the type of muscle that is attached to bones and is under voluntary control, distinguishing it from the autonomic operation of cardiac muscle. Striated muscle refers to the appearance of the muscle fibers when viewed under a microscope; both skeletal and cardiac muscles are considered striated due to their banded appearance, but this term does not specify the heart muscle uniquely.

Thus, calling the heart muscle "cardiac muscle" precisely identifies its function and location within the cardiovascular system.