astounding facts about the human body

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Astounding Facts about the human body

21. Astounding Facts 19
A red blood cell can circumnavigate your body in under 20 seconds.
22. Astounding Facts 16
The average red blood cell lives for 120 days.
23. Astounding Facts 17
There are 2.5 trillion (give or take) of red blood cells in your body at any moment. To maintain this number, about two and a half million new ones need to be produced every second by your bone marrow.That s like a new population of the city of Toronto every second.
24. Astounding Facts 18
Considering all the tissues and cells in your body, 25 million new cells are being produced each second. That s a little less than the population of Canada every second !
25. Astounding Facts 50
Capillaries, on the other hand, are so small that it takes ten of them to equal the thickness of a human hair.
26. Astounding Facts 49
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
27. Astounding Facts 48
Give a tennis ball a good, hard squee ze. You re using about the same amount of force your heart uses to pump blood out to the body.
28. Astounding Facts 47
?It s impossible to sneeze with your eyes open.
29. Astounding Facts 46
The life span of a taste bud is ten days.
30. Astounding Facts 45
If you could save all the times your eyes blink in one life time and use them all at once you would see blackness for 1.2 years!

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