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Body Parts

Body Parts work together to perform different functions required for life. Learn how your internal organs operate in this section.

Your Appendix Actually Has a Valuable Function

This organ is finally getting some street cred after centuries of being largely underestimated. See more »

The Human Body Has Just Upped Its Official Organ Count

Guess who's the new kid on the block? See more »

What's Happening When People Suddenly Gain Superstrength?

When a teen lifts a burning car off the ground, it seems like a superhuman feat. But there's some simple — and amazing — science behind it. See more »

Is it possible to swallow your tongue?

The human tongue is essential for speaking and eating ice cream. Ever worry about swallowing yours? We can put that concern to bed. See more »

Why doesn’t your tongue get infected when you bite it?

There's nothing worse than biting your tongue. Unless it swells up and gets infected — thankfully it's pretty rare. See why. See more »

Why don't women have Adam's apples?

One of the world's most enduring questions – besides "why do men have nipples?" – is "why don't women have Adam's apples?" The answer isn't as simple as you might think. See more »

Why are some people more ticklish than others?

Were you ever subjected to "tickle torture" from an older sibling? If you're feeling uncomfortable right now, you might be more sensitive to the dreaded tickle monster than the rest of us. See more »

Have doctors ever found teeth in a vagina?

Vagina dentata is the stuff of legends — but is it possible for a woman to have teeth in her vagina? The answer might surprise you. See more »

Is your foot really the same length as your arm from wrist to elbow?

You can test this pretty easily for yourself, but does it hold true for most people? Da Vinci has the answer. See more »

Why do we have 10 fingers and 10 toes?

So many notes announcing new babies start, "Everyone's safe and healthy with 10 fingers and 10 toes." But why do most folks have 10 of each? See more »