Your corneas receive no blood supply — they get oxygen directly from the air.
Fact #3275
More Human Body Facts
Your body replaces cells constantly.
Fact #2365 · Human Body
The human nervous system can send signals at over 200 miles per hour.
Fact #2642 · Human Body
Your brain fills in blind spots in your vision automatically.
Fact #2740 · Human Body
You are slightly taller when you wake up than when you go to sleep.
Fact #2713 · Human Body
The human skeleton renews itself over time.
Fact #133 · Human Body
Stomach acid is strong enough to dissolve razor blades.
Fact #3267 · Human Body
Your brain can store the equivalent of millions of gigabytes of information.
Fact #1798 · Human Body
Your brain processes reality.
Fact #2399 · Human Body
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