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, ...

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 ...

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 ...

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.

Quirks and Quarks19:53Our planet’s circulatory system depends on animals eating, excreting and expiring From the tiniest insects to the largest whales, biologist Joe Roman says animals play an ...

The circulatory system is the heart and all the blood vessels. Find out more with Bitesize. For students between the ages of 11 and 14.

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 ...