The primary function of cardiac muscle tissue is to contract and pump blood throughout the cardiovascular system. This specialized type of muscle, found only in the heart, operates involuntarily and is characterized by striated fibers that are interconnected, allowing for synchronized contractions. Cardiac muscle tissue relies on the inherent properties of its cells, such as the presence of intercalated discs, which facilitate rapid electrical conduction, ensuring that the heart beats rhythmically and efficiently to maintain blood circulation.