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.
How White Matter Helps the Brain's Gray Matter Function
Bruce Willis Has Aphasia. What Is It and What Causes It?
Can Our Bodies 'Learn' to Withstand Frigid Temperatures?
The True Story of the Blue People of Kentucky
What Is the Rarest Blood Type in the World?
What Does It Mean If Your Blood Oxygen Level Is Low?
What Is Saliva and How Does It Change the Taste of Food?
The World's Longest Poop Story Is a Crock of, Well ...
When You Have to Go But Don't Want People to Know
Does Oxytocin Make Us Fall in Love?
5 Ways Homeostasis Keeps Your Body Humming Along
Is It Possible to Get Taller as an Adult?
Do You Have One of the 6 Rarest Eye Colors in the World?
Why Do Babies' Eyes Change Color?
There Are 6 Different Eye Shapes. Which One Is Yours?
'Man Flu' Could Be a Real Thing
Sugars in Human Breast Milk Act as Antibacterial Agents
Does mouthwash affect your immune system?
Kidney Stones Are Excruciating, But the Source of Pain Is Surprising
Why Do We Do a Little Dance When We Have to Pee?
Do You Turn the Door Key and Have to Pee? It May Be All in Your Brain
The Lymph System
What is lymph?
How One Key Protein May Help Tendons Enhance Athletic Performance
What Are Muscle 'Knots' and How Do You Get Rid of Them?
Children Can Regrow Their Fingertips. How Cool Is That?
What Happens When the Wind Is Knocked Out of You?
The Science Behind Why We All Have Snot
Why Breathing Through Your Nose Is Best
Learn More / Page 7
Finding out what shape your memory is in should be the first step in trying to improve it. Test your memory to find out if those memory glitches are normal.
You can improve your memory by taking several simple steps. You can make the decision to get better at remembering things today! Learn more about sharpening your memory in this article.
Worried about memory loss? Fear not, there are still lots of lifestyle changes you can make to help prevent it, such as managing stress. Learn more about memory-saving lifestyle changes in this article.
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Can humans regrow fingers? Fetuses can regrow almost anything that gets damaged while in the womb. But can adult humans can regrow fingers?
Exoskeletons normally cover insects, not humans. Why would a human ever want one? Is the possibility of an exoskeleton for humans just around the corner?
The nervous system is a complex network of specialized tissues that regulates thoughts, emotions, actions, sensations, and body functions. It has two major divisions: the central nervous system and the peripheral nervous system.
The endocrine system comprises a number of glands that produce hormones with a varied array of vital functions. Hormones control or regulate the development or function of structures throughout the body.
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Healthy digestion involves the whole body. Learn about the processes and body parts that go into digestion.
The heart is one of the strongest muscles in the body. Learn about this extremely vital part of the body.
Muscles are one of those things that most of us take completely for granted, but they're the body's engine. Without our muscles, we couldn't walk or talk -- and our blood would stop flowing.
When you donate blood, your blood type is an important factor in how useful your donation may be. Just what are blood types?
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The kidneys spend 24 hours a day, seven days a week filtering gallons and gallons of blood. But that's not all these little bean-shaped organs accomplish in a day.
We humans act in our own self-interest, but when it comes to cotton buds and ears we do exactly what science says not to. And yes, your doctor can tell.
You couldn't breathe without your lungs and you do it without even thinking about it. So, how do your lungs manage this amazing feat?
Ever wonder how your stomach acid attacks the food inside it but not the stomach itself?
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Millions of people have refractive vision problems -- when the eyes get blurry or can't focus on an object. Learn about four major types of refractive vision problems.
If you've ever laced your fingers together, turned your palms away from you, bent your fingers back and heard a loud crack or pop, you know what knuckle-popping sounds like. So, what would happen if you popped your knuckles all the time?
我们都知道20/20视力是一件好事,但是仅仅what do those numbers mean?
淋巴是常用的医学术语,但是是什么it mean exactly?
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Your ears are very sensitive to the air or water pressure around them. But just what happens when you dive into that pool?
You may never have thought about it (unless your child asks), but boogers are sticky for a perfectly logical scientific reason.
You breath all day, every day. How much oxygen does this process consume?
By Sherry Kahn
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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The heart is a vital organ that basically serves as a pump. Learn about heart chambers and valves, blood flow, the heart's electrical system and blood supply. Read more about how this amazing organ works.
There are millions of bacteria, microbes, viruses, toxins and parasites that want to invade your body. And they'd happily do it, too -- if it weren't for your immune system.