Body Parts
Body Parts work together to perform different functions required for life. Learn how your internal organs operate in this section. See more »
what's inside: anatomy channel
Anatomy covers the structure and functions of the body's organs and systems. Learn how these components work in harmony to sustain human life.
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Body Systems
Your body is pretty amazing. At any given point you have many biological processes going on -- circulatory, digestive, brain & central nervous systems and more. Learn about these body systems as well as the eye, ears, nose and throat. See more »
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Cells & Tissues
Cells & Tissues are the building blocks for human organs. Learn about the structure and function of cells and tissues. See more »
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featured articles
Does gum really stay in you for seven years?
Whether you chew to freshen your breath or blow a big bubble, you probably shouldn't swallow gum. But does it really stay in your body for seven years if you do?
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videos: anatomy
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How the Body Uses Cholesterol
Cholesterol produces a wealth of highly valuable substances in the body. It makes its mark in digestion, absorption of vitamins, and even reproduction. Find out why your body needs cholesterol.
How Blood Works
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.
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