Learn how our bodies move blood best by building a model of the body's circulatory system--in sickness and in health. George Retseck. Key Concepts Biology Health Medicine Circulatory system.

Physicians followed an incorrect model of the circulatory system for 1500 years (Image credit: Human heart diagram via Shutterstock) In the 2nd century, ...

Your circulatory or cardiovascular system serves a vital function by delivering oxygen and nutrients to all the organs and tissues of your body. Learn more about how the circulatory system works ...

Evolution of circulatory system. Trend for separation of oxygenated and deoxygenated blood. These changes resulted from the changes from gill to lung respiration, change from aquatic to terrestrial ...

A young boy and a model of the human circulatory system. ... Circulatory system – The circulatory system transports water and nutrients around the body. Not all animals have the same system.

Your circulatory system contains three blood vessel types: arteries, veins, and capillaries. Arteries carry blood from the heart, unlike veins, which carry blood to the heart. According to the ...