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

By Laurie L. Dove

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?

By Laurie L. Dove

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?

By Jennifer Sellers

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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.

By Jennifer Sellers

Certain scientists have taken on the unappealing job of evaluating the debris that hangs out in the human belly button. What's hiding in your belly button?

By Jennifer Sellers

Do your ears hang low? Do they wiggle to and fro? Could it be because your ears keep right on growing long after the rest of you has stopped?

By Laurie L. Dove

The human body is full of things that might make you shudder — sweat, eye gunk, pus, partially digested food. What are some of the ickiest and most nausea-inducing items you're carting around in your person?

By Maria Trimarchi

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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.

By Robert Lamb

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?

By Cristen Conger

Every day in the United States, an average of 18 people die while awaiting organ transplants because of a critical shortage of donors. Get facts about organ donation here.

By Discovery Fit and Health Writers

Every guy is self-conscious about something, and hours are often spent wondering how he measures up to the competition. But what would-be body flaws are the most embarrassing?

By Kevin P. Allen

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Beauty may be in the eye of the beholder, but women are definitely held to higher standards than men. Could this be why so many of us are embarrassed of our bodies?

By Terri Briseno

No one is perfect, but sometimes, we go above and beyond to hide our flaws. Is your No. 1 insecurity on our list?

By Sara Elliott

Your pituitary gland manages most hormone production. Learn about the pituitary gland in this article.

By HowStuffWorks.com Contributors

The sphenoid sinuses are located behind your eyes. Learn more about what sinus is located behind your eyes from this article.

By HowStuffWorks.com Contributors

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The maxillary sinuses are located right under your eyes and above the roots of your upper teeth. Learn more about the location of your maxillary sinuses from this article.

By HowStuffWorks.com Contributors

An Adam's apple is the protrusion of cartilage in the neck. Learn about an Adam's apple from this article.

By HowStuffWorks.com Contributors

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.

By Molly Edmonds

But no matter how many times you've doodled one on a piece of paper or touched your chest when expressing affection for someone, there's probably a lot you don't know about it. So what are five things you don't know about your heart?

By Tom Scheve

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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.

By Cristen Conger

Have you ever wondered what your body looks like on the inside? Take a tour of your major bodily organs and learn about unusual organ conditions with these pictures.

The human body is fantastic biological specimen. Learn more about the human body with these revealing and insightful facts.

By DiscoveryHealth.com writers

Vestigial organs are like the contents of your junk drawer: an assortment of objects that once had a purpose or might come in handy. What can these evolutionary mementos tell us?

By Molly Edmonds

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It happens more often than you may think. Sometimes a baby is born with organs outside of his or her body and has a slim chance of survival. What causes this?

By Jacob Silverman

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.

By Jacob Silverman