Which system controls the circulation of blood throughout the body?

The circulatory system is responsible for the circulation of blood throughout the body. This system encompasses the heart, blood vessels, and blood, working together to transport nutrients, oxygen, hormones, and waste products to and from cells. The heart pumps blood, which travels through arteries and veins, providing the body with the necessary materials for cellular function and sustaining life.

In contrast, the nervous system plays a role in regulating and coordinating bodily functions, including the circulatory system, but it does not directly control blood circulation. The endocrine system regulates various processes through hormone secretion, influencing metabolic functions, growth, and development but not the physical transport of blood. The excretory system is primarily concerned with the removal of waste products from the body rather than blood circulation. Consequently, the circulatory system is the definitive answer when identifying the system that directly controls blood circulation.