What is the only location where cardiac muscle tissue is found?

Cardiac muscle tissue is unique to the heart, where it plays a critical role in pumping blood throughout the body. This specialized type of muscle is involuntary, meaning it operates without conscious control, and is characterized by its striated appearance and intercalated discs that facilitate synchronized contractions.

Other options refer to the arteries, veins, and lungs, which have different types of tissue. Arteries and veins are lined by smooth muscle and connective tissue to regulate blood flow and pressure, while lung tissue consists primarily of epithelial cells and alveoli, which are responsible for gas exchange. Therefore, the heart is the exclusive site of cardiac muscle, making it the correct answer to the question.