Cardiac muscle is a specialized type of muscle found only in the heart. It is responsible for pumping blood throughout the body, ensuring that oxygen and nutrients reach all organs and tissues. Unlike other muscle types, cardiac muscle is involuntary, meaning it works automatically without conscious control. Its unique structure allows it to contract rhythmically and continuously throughout a person's life. The cells of cardiac muscle are interconnected, forming a network that helps synchronize heartbeats. This coordination is crucial for maintaining a steady flow of blood. The heart's electrical system, including structures like the sinoatrial node, plays a key role in regulating these contractions, ensuring the heart beats efficiently.