How much circulation is in the human body?

Circulation in the human body:

1. The heart and the blood vessels together make up the circulatory system that circulates blood throughout the body.
2. The circulation process starts once the heart gets relaxed between two heartbeats.
3. The blood then flows via the arteries of the heart.
4. The veins circulate the blood again back to the heart.
5. In this way, an average of 4.5 to 5.6 liters of blood circulates three times every minute.