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.

George Washington died after his physician treated his sore throat with bloodletting, but don't let that stop you from ...

Learn about the circulatory system with these interactive learning resources for KS2 Science students aged 7-11 from BBC Bitesize.

Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.