Absolutely! Tears, which flow from tear glands into your eyes through tiny tear ducts, wash the eyeballs and carry away dust and dirt. Tears, which contain salt, kill germs and keep the cornea (the transparent front part of the eye) moist. Some of the tears drain out of your eyes through tear ducts, which are tiny tubes that run between your eyes and your nose. That is why people almost always blow their nose after they cry.
- What do eyelashes do?
- How often does a person blink?
- What are the five main senses?
- Why do people get wrinkles and gray hair as they get older?
- Why do zits always form in the middle of the forehead?
- What causes goose bumps?
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- Why is the skin between my toes sometimes red and itchy?
- Will a wart go away if I wrap it in duct tape?
- What is a seed drill?
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- How does the body cool off?
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- Why do people have different color skin?
- Which hair grows the fastest?
- How many hairs do I have on my head?
- What is pus?
- Why do scabs form?
