Interesting facts about the human body

Our body have many mystery, scientist are always research to solve it. here are some interested fact related o our body.

1. The thickness of your skin varies from ½ to 6 millimeters, depending on the area of your body.
2. The four taste zones o your tongue are bitter (back),sour (back side), salty (front sides), and sweet front.
3. You use 14 muscles to smile and 43 to frown.
4. The strongest muscle of the body is the masseter muscle, which is located in the jaw
5. The small intestine is about 25 feet long.
6. The large intestine is 5 feet long and three times wider than the small intestine.
7. Most people shed 40 pounds of skin in a lifetime.                                               
8. When you sneeze, air rushes through your nose at a rate of 100 mph.
9. An eyelash lives about 150 days before it falls out.
10. Your brain send a message at the rate of 240 mph.
11. About 400 gallons of blood flow through your kidney in one day.
12. You bilk your eyes about 20000 times a day.                                                                                                       
13. Your heart beat about 100000 times a day
14. Each of your eyes has 120 million rods, which help you see in black and white.
15. Each eye has six million cones, which help you see in color.
16. One is every 12 men is color blind.
17. Placed end to end, all your body’s blood vessels would measure about 62000 miles.
18. The average human brain has about 100 billion nerve cell.
19. The thyroid cartilage is more commonly known as the Adam’s apple.
20.  It’s impossible to sneeze with your eyes open.
21. It take  the interaction of 72 different muscles to produce human speech.
22. When you sneeze, all your bodily function stoop even your heart.
23. Babies are born without knee cap. They don’t appear until the child reach 2-6 years of age.
24. The average cough comes out of your mouth at 60 miles 96.5 km./h)
25. Relative to size the strongest muscle in the body is the tongue.
26. Children grow faster in the spring time.
27. Women blink nearly twice as much as men.
28. If you go blind in one eye you only lose about 1/5  of your vision but all your sense of depth
29. Our eyes are always the same size form birth, but our nose and ears never stop growing.
30. In the average lifetime, a person will walk the equivalent of 5 times around the equator.
31. The length of the finger dictates how fast the fingernail grows. Therefore, the nail on your middle finger grows the fastest, and on average, your toenails grow twice as slow as your fingernails.
32. Odontophobia is the fear of teeth.
33. Ancient Egyptians used to shave off their eyebrow to mourn the death of their cats.
34. Hair is made from the same substance as fingernails.
35. Human thigh bones are stronger than concrete.
36. The length of the finger dictates how fast the fingernail grows, therefore, the nail on your middle finger grows the fastest, and on average, your toenails grow twice as slow as your fingernails.
37. During a 24 hour period, the average human will breathe 23,040 times.
38. Human blood travels 60,000 miles (96,540 km) per day on its journey through the body.