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.
  • Body Parts
  • Body Systems
How much do you know about the human body?

Watch this video showing a surgical procedure that can straighten a senior's spine on HowStuffWorks. More than 1.4 million people in the U.S. suffer from lumbar spinal stenosis, where the bones in the spinal chord pinch nerves when you bend or move; it's very painful and severely limits mobility, usually in seniors. See how a new non-invasive surgery can ease the pain and increase mobility in this video from MultiVu.

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What if I crossed my eyes for 10 minutes?

"Don't cross your eyes -- they'll stick that way!" That's something most of us have heard from our mothers at one time or another. Can your eyes really get stuck?

How Bones Work

If you didn't have bones, you'd be puddled on the floor like a jellyfish with skin -- and your ability to impress people on the dancefloor would be severely compromised. What else are skeletons for, besides decorating your house for Halloween?

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