Final answer:
The cardiovascular system consists of the heart, blood vessels, and blood.
Step-by-step explanation:
Detailed Answer:
The three main components of the cardiovascular system are heart, blood vessels, and blood. The heart is responsible for pumping blood throughout the body. Blood vessels include arteries, veins, and capillaries which transport blood to and from different parts of the body. And blood carries oxygen, nutrients, hormones, and waste products.
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