The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body ...

Learn how our bodies move blood best by building a model of the body's circulatory system--in sickness and in health.

Earth’s vast underground ‘circulatory system’ will be mapped for first time — and it’s made of fungi by Jenna Romaine | Nov. 30, 2021 | Nov. 30, 2021 ...

The circulatory system is the heart and all the blood vessels. Find out more with Bitesize. For students between the ages of 11 and 14.