2007-01-03 11:44:56 · 7 answers · asked by Anonymous in Health ➔ Other - Health
Best Answer - Chosen by Asker
1- During a yawn, there is a slight increase in pressure inside the skull (likely caused by slight increases in the amount of oxygen taken in during a deep yawn). This causes the cerebrospinal fluid (CSF), the fluid that surrounds the brain and flows through the brain's ventricle system, to be forced out faster than normal. That fluid enters the lachrymal (tear) system. That increase in fluid pushes out the tears.
2 - the more simplistic reason may be that when you yawn you scrunch up a bunch of facial muscles. That causes the tear glands and ducts to be squished, forcing out some tears.
Talks about yawning as well:
http://en.wikipedia.org/wiki/yawn#causes...
2007-01-03 11:47:20 · answer #1 · answered by Poetic Jezebel 3 · 0⤊ 1⤋
the more simplistic reason may be that when you yawn you scrunch up a bunch of facial muscles. That causes the tear glands and ducts to be squished, forcing out some tears.
2007-01-03 11:47:42 · answer #2 · answered by smashleyy 2 · 0⤊ 0⤋
my eyes water too when i yawn its wierd
the only thing i can think of is maybe because your tired.
but i dont think its entirely proven to be because your tired i yawn when im tired and my eyes water too.
2007-01-03 11:48:37 · answer #3 · answered by alliexbabey7 1 · 0⤊ 0⤋
when you yawn this is a sign that you have very little oxygen in your body. by yawning you take a big chunk of oxygen and fill your lungs.
2007-01-03 11:47:13 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i don't know, i do that too. its probably some sort of natural defence mechanism created by our bodies
2007-01-03 11:47:26 · answer #5 · answered by Carroll Patriot 2 · 0⤊ 0⤋
I have the same probelm, I want to know!
2007-01-03 11:47:11 · answer #6 · answered by Dani 2 · 0⤊ 0⤋
because that means your sleepy
2007-01-03 11:47:27 · answer #7 · answered by Carlos R 1 · 0⤊ 0⤋