What does the circulatory system primarily control?

The circulatory system primarily controls the circulation of blood and lymph. This system is essential for transporting nutrients, oxygen, and hormones to cells throughout the body, as well as removing metabolic waste products. It consists of the heart, blood vessels, and blood itself, which work together to maintain homeostasis and ensure that tissues receive adequate supplies of essential substances.

Additionally, the circulatory system includes lymphatic components that help in the immune response and fluid balance in the body. By managing blood flow and lymph movement, the circulatory system plays a critical role in sustaining life and supporting overall physiological functions.