👉 Circulatirenae (Latin: "circulatory system") is a term used to describe the network of blood vessels, blood cells, and other components that circulate in the body. It refers to the continuous supply of oxygenated blood from the heart and its return through veins and arteries to tissues throughout the body. Circulation is an essential process that transports nutrients, waste products, hormones, and immune cells around the body. The circulatory system consists of several major components: