That means that the vans are very busy indeed, all the time. So it's a good job we've got the circulatory system to transport nutrients, water and oxygen to the entire body. Inside you ...

Your daily habits impact blood flow more than you realize. Learn how small changes in movement, hydration, and sleep can improve circulation.

A real-life example of a blind climber who uses his tongue to see is shown. Human circulation. video Human circulation This short film takes us on a journey around the circulatory system using the ...