Why do your eyes close when you sneeze?
80603
because scientists studied that if you dont close your eyes when you sneeze your eye balls pop out.
1458
Researchers aren't sure exactly why the sneeze reflex happens, but whatever neurological message tells the eyes to close probably comes from a primitive part of the brain called the medulla oblongata in the brain stem.
550897
A search of the Internet yields a lot of sites that basically say that it's a known phenomenon, but science hasn't figured out why.\n\nThere is speculation that the optic nerve gets overloaded by the bright light and "leaks" onto the nerves that trigger sneezing.
469034
Because otherwise some 'thing' in your eyes will get damaged by the fastness of a sneeze, and therefore the eyelids react with shutting when sneezing.\nDon't really remember more than that, I read it 3 years ago somewhere... :S
119554
From the website linked below: \n\nSince the detailed answer below got kind of long, I will summarize the main points up front. About 25% of people do actually sneeze when exposed to bright lights like the sun. We do not know exactly why this happens, but it might reflect a "crossing" of pathways in the brain, between the normal reflex of the eye in response to light and the sneezing reflex. There is no apparent benefit from "sun-sneezing", and it probably is nothing more than an unimportant (but annoying) holdover of evolution. \n\nRead the whole article for detailed information.
1081304
due to the force with which u sneeze ,ur eyes will automatically close.try it but u will not succeed.\n\nGOOD LUCK!
925113
Well the fact is that humans cannot sneeze while asleep.\nSneezing requires a reflex mechanism, wherein the sensory nerves in our upper respiratory tract, esp nostrils, are stimulated by some stimuli (mechanical or chemical or other)and these nerves then go to the CNS (i.e brain) and as a final process excite the nerves which supply muscles pf our respiration and the pharngeal region and the man sneezes thus. You must \nknow that this reflex is a natural means to protect our sensitive upper respiratory tract from harmful influnces or, more appropriately, external influences, be it a solid or a gas or as a response to some infection. Now when the man sleeps, his brain is not working at its normal levels and so even though the man's nerves have some external factor acting upon them,\nno reflex is initiated and the man doesn't sneeze. You must also know that when the stimuli continues or crosses a particular \nlevel, it changes from an irritative agent to a source of maybe say pain and the the man can have a disturbed sleep; there is a threshold for every thing.
332206
Some people think it does. but really, the simple fact of looking up is opening your nasal cavities, making it easier for your body to complete the sneeze. It seems logical for people to try to make the connection between sneezing and looking at light... The sun and light are just making you squint when you look at it.
574231
Sneezing is a reflex that occurs when something irritates the mucus membrane in our nose. Particulate matter, bacteria, and other such things get bogged down in the mucus and tiny hair-like cilia wiggle the potentially hazardous material toward the front of the nose or down the back of the throat. A message is sent to the brainstem, which sends messages all over the body. What happens next?…that great spasmodic reflex we call sneezing, a well-coordinated effort of many muscles working at once…your diaphragm muscle flexes, as do your abdominal muscles, your chest muscles, the muscles controlling the vocal cords, and the muscles in the back of your throat…your tongue raises to block your mouth…and your eyelids close. Air is forced out of your nose, sending thousands of bacteria-filled globules of snot into our immediate atmosphere…and then, as good manners dictate…people will invoke higher powers to bestow upon you a blessing. A most sanctimonious event, indeed!
750600
A sneeze is a reflex that you can do even during sleep but considering you are sleeping you yourself won't know that you had sneezed while asleep, perhaps another person around could tell you or perhaps you can keep a recorder running while you are asleep to know. Anyway, if you sneeze while asleep I believe it will be a reasonable cause for you to awake so in that case you sneezed and you know you did but not in a sleeping situation anymore.♥
402647
It is not the sun that is stopping you from the sneeze, it is the position of your head. you can look at the moon or a a piece of key lime pie that is floating in the sky and have the same result.
414409
well...I think that`s because when you sneeze, cough or laugh hard...your diaphragm contracts and the body is concentrated very hard on that muscle.When you cough..sneeze etc. you blow out CO2 and your body tries to get rid of it with the help of every space that leads from your body outside your body, for example : when you sneeze you have tears coming out of your eyes...that`s because it`s a sensitive tissue that produces water and has to get out fast from your body in case of emergency ... like crying(because of the nerves that must relax), laughing hard etc... I hope the answer helps..and you also must consider the answer above...with the weak muscles
1034537
I don't know?..But next time I sneeze I will definitely try to keep my eyes open!...lol..let ya know then...
670863
It's probably dust. You can clean all you want but dust is still in the air. When you clean your house you are cleaning the dust that has fallen out of the air and landed on furniture. You can't clean your air unless you have a special filter.\n\nDo you have any animals in the house? It could be an allergy to an animal.\n\nDoes it only happen in your house, or other indoor places?\n\nAs far as sneezing fits, that's how it effects some people. There isn't much you can do about it.
304437
When you sneeze, it is said that your heart stops beating. \nWhen you cough, your heart is not affected.
871528
I doubt it can damage your brain.  But it is bad for you.  You sneeze to expell germs or something irritating your sinuses, so not allowing yourself to sneeze ("closed mouth") allows that germ or whatever to stay inside.  Just let yourself sneeze!
323959
Usually the sneezing relex make your eye lids to close.