BODY PARTS

Body Parts work together to perform different functions required for life. Learn how your internal organs operate in this section.
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Top 10 Body Parts That Can Be Successfully Rebuilt

Think it's a hassle when your car breaks down? Try finding a spare organ when your body gives out. Thanks to years of research, scientists are now amassing a "body shop" of sorts, dealing not in tires or mufflers, but in bladders, bones and breasts.

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  • What makes your arms, legs and feet fall asleep?

    What makes your arms, legs and feet fall asleep?

    Having a limb fall asleep can range from annoying to downright painful. See what's going on inside your arm or leg when it falls asleep. See more »

  • What's earwax made of?

    What's earwax made of?

    As anyone who's ever used a cotton swab knows, human ears generate a fair amount of earwax. But what exactly is the stuff, and do you need to make a point of clearing it out every so often? See more »

  • Where's the best place to take a bullet if you get shot?

    Where's the best place to take a bullet if you get shot?

    Getting shot is not something we want to happen, but if it does, where is the best place to take a bullet? Find out what the experts think. See more »

  • Why are some people born with a reversal of organs?

    Why are some people born with a reversal of organs?

    Most people's organs follow the same basic layout -- heart on the left, appendix on the right and stomach in the middle. But in about 1 in 10,000 births, organs end up on the opposite side. See more »

  • Why are some people more ticklish than others?

    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 »

  • Why do elbows itch?

    Why do elbows itch?

    If you have chronically itchy elbows, you're probably irritated in more than one way, as elbows aren't easy to scratch. For what it's worth, you're also in good company: A certain Civil War general shared your itchy condition. See more »

  • Why do humans have body hair?

    Why do humans have body hair?

    By waxing, shaving, plucking and shearing, we manage to keep unwanted hairs at bay. But considering how much you shell out for new razors and your trips to the salon, it's a wonder that we bend over backward to groom a bunch of dead cells. See more »

  • Why do men have nipples?

    Why do men have nipples?

    During early pregnancy, both male and female human embryos develop something called milk lines, ridges that eventually recede into nipples. Why have some species lost this unisex trait, and can human men actually produce milk? See more »

  • Why do we have 10 fingers and 10 toes?

    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 »

  • Why do we have fingerprints?

    Why do we have fingerprints?

    If you've ever considered burning them off for various nefarious purposes, you may want to reconsider. Those babies are more than just loopy tools of identification. See more »

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