The heart is a unidirectional pump. Valves are present to prevent the backflow of blood. This unidirectional flow of blood through the heart shows that mammals have a double circulatory system. This ...

The Circulatory System is the system of organs in the human beings and other animals which is responsible for transport of materials inside the body. It consists of heart, arteries, veins, capillaries ...

Every day, your heart pumps about 10 pints of blood 60,000 miles around your body through your circulatory system. That system is made up of blood vessels, the tubes that carry blood throughout your ...

Active blood circulation across the body is the key to healthy living and being physically active keeps it better. Proper blood circulation offers key health benefits from healthy lungs to sharp brain ...

Biologists often show oxygenated blood as red, and deoxygenated blood as blue. This is just a way of illustrating it in biological diagrams. It's also helpful in showing the different regions of the ...