Why does your nose run when you cry?  

istrife 42M
2 posts
6/17/2005 5:10 am

Last Read:
3/5/2006 9:27 pm

Why does your nose run when you cry?


Crying is, of course a response to an emotional stimulus (or a response to a foreign object), that may or may not (depending on the reason) have a physiologic purpose. Tears, consisting mainly of saline and lysozome, are secreted continuously to keep the eyes free of microorganisms and debris. Lysozome is an enzyme in tears that penetrates and destroys certain microbes. Cool, huh? So, why is it that your nose always gets so runny when you cry? Well, normally your tears drain through a canal that dumps into your nasopharynx, and drains down the back of your throat. When you cry, you are producing more tears than normal, and the drain time is slower than production time, so your nose gets runny with tears. Wow. The things you learn on the road to medical school, huh?

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