Your circulatory or cardiovascular system serves a vital function by delivering oxygen and nutrients to all the organs and tissues of your body. Learn more about how the circulatory system works ...

The heart plays a key role in the circulatory system, helping to pump blood around all the body. Blood vessels range in size, from larger arteries into very small blood vessels called capillaries.

The circulatory system includes the heart and blood vessels that carry blood and oxygen around the body. Some circulatory diseases, such as stroke, heart attacks, and aneurysms, are life ...

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

Your body's circulatory system is a wondrous thing. It's made up of blood vessels that carry blood to and from your heart and also pumps blood to your lungs so you can breathe. It helps grow and ...

The cardiovascular system, also known to some as the circulatory system, consists of the heart, blood vessels, and blood. Learn more about it here.

Quirks and Quarks19:53Our planet’s circulatory system depends on animals eating, excreting and expiring From the tiniest insects to the largest whales, biologist Joe Roman says animals play an ...