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.

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 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 ...

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.

Circulatory system: Blood vessels. Laid end-to-end, ... 2.5 million new red blood cells are released from the bone marrow, replacing a similar number that are destroyed or damaged.

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 ...

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 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 ...

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.