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 about the circulatory system with these interactive learning resources for KS2 Science students aged 7-11 from BBC ... White blood cells - They defend the body and help to fight infection.

The system's main function is to transport blood, nutrients, gases and hormones to and from the cells throughout the body. Here are 11 fun, interesting and perhaps surprising facts about the ...

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 immune system has the immense challenge of determining who’s who within the vast ocean of cells of an organism. One way immune cells can determine the identity of a cell is with special membrane ...

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 thickness of tissues without an integrated circulatory system has generally been limited to less than 1 mm, making it challenging to produce centimeter-scale or larger tissues with densely packed ...

The blood circulatory system, also called the cardiovascular system, consists of the heart and the blood vessels that run throughout the body. It delivers nutrients and oxygen to all cells of the ...

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

Learn about the circulatory system with these interactive learning resources for KS2 Science students aged 7-11 from BBC ... White blood cells - They defend the body and help to fight infection.