2006-09-18 13:51:41 · 5 answers · asked by Pei Xuan 1 in Social Science ➔ Psychology
Sneezing is generally caused by irritation and some times bacterial clog up in the throat, lungs or in the passages of the nose. Allergens such as pollens, pet dander, house dust mites, as well as nonallergenic particles are usually harmless, but when they irritate the nose the body responds by expelling them from the nasal passages. The nose mistakes strong odors, sudden chills, bright lights (see photic sneeze reflex), and even orgasms in some people for nasal irritants, and it tries to defend itself with a sneeze.
It is almost impossible for one to keep one's eyelids open during a sneeze, although some rare individuals report having little if any trouble doing so. The reflex of shutting the eyes serves no obvious purpose: the nerves serving the eyes and the nose are closely related, and stimuli to the one often trigger some response in the other. The closing of the eyes may be to protect the tear ducts and blood vessels from bacteria expelled in the sneeze.
2006-09-20 09:02:25 · answer #1 · answered by Anonymous · 0⤊ 0⤋
because stuff get up in your nose and you may have a allergic reaction or maybe it is ticling the inside of your nose and thats the only way to get it out?
2006-09-18 20:54:34 · answer #2 · answered by Anonymous · 0⤊ 0⤋
irritants to the mucosal lining of the nasal passages.
2006-09-18 20:59:07 · answer #3 · answered by patrea_s 2 · 0⤊ 0⤋
To eject foreign bodies from their nose and sinuses (dust particles, gnats, cocaine, etc.)
2006-09-18 20:59:50 · answer #4 · answered by I'm_Bored 4 · 0⤊ 0⤋
that is the ultimate question
2006-09-18 20:55:03 · answer #5 · answered by DeAd DiScO 4 · 0⤊ 0⤋