Come along children, we’ve come to the hospital to learn how blood is moved around the body in the circulatory system ... of the heart then pumps this oxygen-poor blood back to the lungs ...

The circulatory system is the heart and all the blood vessels in the body which carry cells and substances to all its parts. The heart is a large muscular organ which pumps blood to the lungs and ...

When it comes to understanding the human blood circulation system, one fascinating aspect is the lung was ist tonerin capillaries. These veins play an ...

Our circulatory system, a complex network of blood vessels, capillaries, veins, and arteries, plays a critical role in delivering oxygen and nutrients to every cell in the body. When blood flows ...