Learn about human lungs, respiration system, breathing in oxygen and breathing ... An introduction to the major organs of the human body. VideoAn introduction to the major organs of the human ...

Researchers say they have discovered an entirely new class of life inside the human body, and it is very similar to a virus.

L ooking for a fun way to help students learn about the human body? This human body systems crossword puzzle is a great hands-on activity that makes understanding how our bodies work both engaging ...

The nervous system is a central component of the human body, but most people don't spend much time thinking about it.

The human body is truly a miraculous thing, as it functions every day in big and small ways to keep us alive. But while you may have heard of the immune system or the cardiovascular system ...

The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...

The human body is composed of over 37 trillion cells , each with a limited lifespan. These cells are continuously replaced to maintain organ and ...

Your heart's will to beat, to keep going, is incredibly strong. If the heart fails, so does everything else… Because it's your heart's job to deliver to every cell, to every nook and cranny of ...