Question

The 3 loops of the circulatory system are

Answer 1

The essential components of the human cardiovascular system are the heart, blood and blood vessels. i think

Answer 2

The essential components of the human cardiovascular system are the heart, blood and blood vessels. It includes the pulmonary circulation, a "loop" through the lungs where blood is oxygenated; and the systemic circulation, a "loop" through the rest of the body to provide oxygenated blood.
Hope this helps!