Cardiac myocytes, also known as cardiac muscle cells, are specialized cells that make up the heart muscle. They are responsible for the contraction and relaxation of the heart, enabling it to pump blood throughout the body. These cells are unique because they can generate electrical impulses, allowing them to contract rhythmically and continuously without fatigue. These myocytes are interconnected by structures called intercalated discs, which facilitate communication and synchronization between cells. This coordination is essential for maintaining a consistent heartbeat. Cardiac myocytes have a high density of mitochondria, providing the energy needed for their continuous activity, and they rely primarily on aerobic respiration for energy production.