In summary, the human body is truly amazing. Its complexity means there’s so much to learn, including facts that even biologists are still discovering. We've gathered 35 of the most fascinating ...

The aorta, the largest artery in the body, is almost the diameter of a garden hose. Capillaries, on the other hand, are so small that it takes ten of them to equal the thickness of a human hair.

The amazing human body gets an equally amazing treatment for all its systems and functions. Thorough explanations, visual and verbal, offer an inside look of the body’s marvels. Each year the ...

Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich blood to all parts of the body. amazing heart facts.

The brain is the most complex and powerful organ in the human body. It controls our thoughts ... We’re exploring 10 fascinating facts about the brain, from its incredible power to its small size and ...