Here’s how it works. The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal ...

This short film offers a look at respiration and a tour around the circulatory system and digestive system ... for teaching biology at KS3 and KS4/GCSE in England, Wales and Northern Ireland ...

So now you can take another breath… and another… for the rest of your life… This short film takes us on a journey around the circulatory system using ... at KS3 and KS4/GCSE in England ...