Cardiac muscles are found only in the heart and are self-stimulating, which has an intermediate speed of contraction and energy requirement. This muscle is not part of the musculoskeletal system.
The primary function of the cardiac muscle is to regulate the functioning of the heart by the relaxation and contraction of the heart muscles. Other functions of cardiac muscles include:
- The cardiac muscles function as the involuntary muscle.
- The cardiac muscles are also involved in the movement or the locomotion.
- The cardiac muscles work without stopping, day and night. They work automatically and make the heart contract so that the heart can squeeze the blood vessels and release so that the heart can fill up with blood again.
- The heart comprises a specialized type of cardiac tissue, which consists of “pacemaker” cells. These contract and expand in response to electrical impulses from the nervous system.