When a human ... body needs to get rid of – passes from the blood vessels into the alveoli and gets breathed out into the air. Wheee! I think I could use some exercise myself. Stand back kids ...

I f your kids are curious about how their bodies work, our free printable human body systems worksheets are a perfect resource for kids aged 8-14. Designed to make learning engaging and accessible ...

Lungs can regenerate damaged tissue, to a small extent. A sneeze can expel air from the lungs at speeds up to 100 miles per ...

You may not realize, though, how much tobacco changes your lungs and their ability to bring oxygen into your body. The damage becomes clear when you look at the differences between healthy lungs a ...