What is the role of the cardiovascular system?

The cardiovascular system plays a vital and multifaceted role in maintaining the overall health and function of the body. One of its key functions is the transportation of hormones; the heart pumps blood throughout the body, which carries hormones produced by various glands to their target organs, facilitating numerous physiological processes.

Additionally, the cardiovascular system is crucial for regulating body temperature. By adjusting blood flow to the skin, it helps to dissipate heat or conserve warmth as necessary, ensuring that the body's temperature remains within a healthy range.

Furthermore, the system is responsible for carrying waste products, like carbon dioxide and urea, away from cells to be expelled from the body. This is essential for preventing toxicity and maintaining cellular health.

Given that the cardiovascular system is involved in all of these processes—regulating temperature, transporting hormones, and carrying waste—it is accurate to assert that its role encompasses all these functions, making the choice that includes "all of the above" the correct answer.