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.
No One Can Live Without a Mesentery, But What Does It Do?
Many Animals Have a Cloaca, But Humans Should Not
What's the Difference Between the Fibula and Tibia?
Do You Have One of the 6 Rarest Eye Colors in the World?
What Happens When the Wind Is Knocked Out of You?
What Is Saliva and How Does It Change the Taste of Food?
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Flatulence is funny, but there's actually some pretty interesting stuff going on in your body to cause it. After reading these 10 facts, you may never look at airplane travel the same way.
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?
Learn to recognize the symptoms of a concussion and what causes them. Worried that your child has a concussion? Learn the symptoms of a concussion and how to treat it.
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Human bodies are wonderlands of grossness. You might be shocked to know some of the nastiest things your body is harboring right this minute.
Avoid bloating this bathing suit season by taking these bloating tips to heart and looking great in your slimmest bathing suit!
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?
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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?
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?
Sometimes people choose not to eat for religious, political or health reasons. It's called fasting, and it's been popular for thousands of years. What effects does fasting have on the body? Is it safe?
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
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Your pituitary gland manages most hormone production. Learn about the pituitary gland in this article.
The function of the respiratory system is to bring oxygen to all the parts of your body. Learn what the function of the respiratory system is in this article.
The respiratory system organs include the airways, the lungs, and the blood vessels and muscles attached to them. Learn what the respiratory system organs are in this article.
The sphenoid sinuses are located behind your eyes. Learn more about what sinus is located behind your eyes from this article.
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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.
The respiratory system has several ways to defend itself, including cilia fibers. Learn more about how the respiratory system defends itself from this article.
Teens brains really function differently than adult brains. Learn about the development of teens’ brains in this article.
Whenever you delve into the realm of the paranormal, you're bound to feel the heat of argument between skeptics and believers. Why not end the argument once and for all and locate the part of the brain that may (or may not) control ESP?
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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.
Dehydroepiandrosterone, or DHEA, has a growing reputation as an anti-aging supplement among vitamin users and doctors. Learn about the risks, benefits and controversy of DHEA.
Testosterone is one of the most important, but commonly misrepresented hormones found in the body. Learn about the role of testosterone.
The health of the adrenal gland is of primary importance to help prevent and treat chronic disease. Learn about techniques for maintaining the health of the adrenal gland.
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Thyroid metabolism is complex, and each step can be influenced by nutrition, prescription medications and lifestyle factors. Learn how thyroid metabolism works and discover techniques for maintaining health.
What makes your heart beat is not a simple as you think. Take a look into what makes this crucial organ tick with the help of the information inside this article.