Some Things I Didn't Know

Thanks to The List Universe for being entertaining and informative with lists of all types. Last week was one that had a truly scientific and personal connection- the Top 15 Amazing Facts About the Human Body (which of course I have one of.)

Here are four that amazed me:

1. The stomach’s digestive acids are strong enough to dissolve zinc. Fortunately for us, the cells in the stomach lining renew so quickly that the acids don’t have time to dissolve it.

2. The lungs contain over 300,000 million capillaries (tiny blood vessels). If they were laid end to end, they would stretch 2400km (1500 miles).

10. The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.

14. The eyes receive approximately 90 percent of all our information, making us basically visual creatures.