Cardiac muscles are specialized muscle tissues found only in the heart. They are responsible for pumping blood throughout the body, ensuring that oxygen and nutrients reach all organs and tissues. Unlike skeletal muscles, which are under voluntary control, cardiac muscles operate involuntarily, meaning they function automatically without conscious effort. These muscles have unique properties, including the ability to contract rhythmically and continuously throughout a person's life. Cardiac muscle cells, known as cardiomyocytes, are interconnected by structures called intercalated discs, which allow for synchronized contractions. This coordination is essential for maintaining a steady heartbeat and overall cardiovascular health.