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).
3. A man’s testicles manufacture 10 million new
sperm cells each day – enough that he could repopulate the entire
planet in only 6 months!
4. Human bone is as...
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Posted by Melody Lopack. Posted In :
Science