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 ...

This short film is from the BBC series, Biological processes of the human body. You could recreate the blood cycle / circulation by using red balloons and blue balloons to represent oxygenated and ...

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 ...

Scientists have found that the aorta acts like a 'second heart,' using stretch-and-recoil power to pump blood—revealing a ...

Day and night, the muscles of your heart contract and relax to pump blood throughout your body. When blood returns to the heart, it follows a complicated pathway. If you were in the bloodstream ...