This short film offers a look at respiration and a tour around the circulatory system and digestive system in the human body, through blood vessels and into mitochondria. There is a detailed ...

So it's a good job we've got the circulatory system to transport nutrients, water and oxygen to the entire body. If we could join all the blood vessels in a human body together end-to-end ...

There was no need for circulation. Basic Books ... called the “wine-dark sea”) and inferred that a similar to-and-fro motion of blood operated within the human body. Modern medicine would be ...