When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The circulatory system consists of three independent systems that work together: the heart ...

This short film will be relevant for teaching biology at KS3 and KS4/GCSE in England, Wales and Northern Ireland and National 4/5 in Scotland. Appears in AQA, OCR, EDEXCEL, CCEA, WJEC, SQA Back to top ...

This short film takes us on a journey around the circulatory system using the example of a baby's first breath. BBC Homepage. Skip to content; ... KS3 / KS4 Biology: Human circulation.