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Q: Why do we close our eyes when we sneeze?

A: Scientists think that you close your eyes when you sneeze to protect them. Sneezing is a reflex, or automatic response, that happens when an unwanted chemical or dust particle enters your nose. A nerve carries a message from the nose to the brain telling it to clean out the nose.

Your brain then tells muscles in your body to contract and whoosh air out of your nose to clear it. The sneeze is so powerful that your whole body jolts forward. At the same time, the brain tells the muscles around your eyes to close so your eyeballs don't get scratched or injured during the motion.

QUESTION FROM

Annelle A., Florida

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Title Annotation:the Back Page
Author:A., Annelle
Publication:SuperScience
Article Type:Brief article
Geographic Code:1USA
Date:Nov 1, 2008
Words:145
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