The reason why some people get a cowlick is because the growth of their hair is in a spiral pattern, which causes the hair to either stand straight up, or goes to a certain angle.

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Inside our eye, at the back, is a part called the "retina." On the retina are cells called "rods" and "cones." These rods and cones help us to see colors and light.

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Your blood takes a very long trip through your body. If you could stretch out all of a human's blood vessels, they would be about 60,000 miles long. That's enough to go around the world twice.

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The conjunctiva is a membrane that covers the human eye.

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When a women is pregnant, her senses are all heightened.

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The average weight of a newborn baby is 7 lbs. 6 oz. For a triplet baby it is 3 lbs. 12 oz.

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Every three minutes a woman is diagnosed with breast cancer.

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Some people start to sneeze if they are exposed to sunlight or have a light shined into their eye.

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The first hair dryer was a vacuum cleaner that was used for drying hair.

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Ancient Egyptians used to think having facial hair was an indication of personal neglect.

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