Human Body
The human body is an amazing structure made up of many fascinating parts and systems. Learn about the human body and how its systems work together.
The Biggest Nose in the World Was Over 7 Inches Long
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No One Can Live Without a Mesentery, But What Does It Do?
11 Types of fractures That Can Show Up in an X-ray or MRI
Ever Stand Up and Get Dizzy?
Do You Have One of the 6 Rarest Eye Colors in the World?
Learn More / Page 10
We all know 20/20 vision is a good thing, but just what do those numbers mean?
When you cut yourself accidentally, do you ever wonder what makes up this thing we call blood? It's pretty amazing stuff, considering how it wards off infections while supplying nutrients to every cell in the human body.
The heart is a vital organ that basically serves as a pump. Learn about heart chambers and valves, blood flow, the heart's electrical system and blood supply. Read more about how this amazing organ works.
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There are millions of bacteria, microbes, viruses, toxins and parasites that want to invade your body. And they'd happily do it, too -- if it weren't for your immune system.