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 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.

KS3 / KS4 Biology: Inside the Human Body. ... This short film takes us on a journey around the circulatory system using the example of a baby's first breath.