Question

____________ acts as a pump in the circulatory system.

Answer 1

Heart:

1. Heart is the muscular organ that pumps blood and transports it through an intricate system of circulatory blood vessels.
2. Heart contains four chambers namely, two auricles and two ventricles.
3. Auricles are the upper and ventricles are the lower chambers respectively.
4. The upper chambers receive the incoming blood.
5. The lower chambers pump the blood out of the heart.

Final answer : Heart acts as a pump in the circulatory system.