What is the cardiovascular is made up of?

The cardiovascular system, also known as the circulatory system, is primarily made up of the heart, blood vessels, and blood. The heart acts as a pump to circulate blood throughout the body, while blood vessels, including arteries, veins, and capillaries, transport blood to and from various tissues and organs. Blood itself carries oxygen, nutrients, hormones, and waste products, playing a crucial role in maintaining homeostasis and overall health.