Physical pain can bring tears to our eyes.
Physical sensations, ie. a taste so good it makes your eyes water have likewise effects.
Emotionally, when we are, say, sad, we cry. Or extremely happy, for that. Why?
2006-11-01 23:39:56 · 4 answers · asked by Link 4 in Social Science ➔ Psychology
Tears flow from tear glands into your eyes through tiny tear ducts. The tear glands are located under your upper lids, and when stimulated, produce tears to form a thin film over your eyeballs. Every time you blink the film spreads over your eyes to keep them moist and free of dust and other irritants. Whether you are awake or asleep, happy or sad, this salty fluid is always flowing from the tear glands.
Besides protecting your eyes, the tear glands produce more fluid when your eyes are irritated. These extra tears are called reflex or irritant tears. And, when something makes you happy or sad, your tear glands will produce emotional tears. Used tears then drain down into two tiny openings on the brim of your upper and lower eyelids at the inner edge of your eyes, which lead to the nasolacrimal tear ducts next to the bridge of your nose. From there, they are channeled into your nasal cavity where they are swallowed or blown out with other nasal fluids. If there are too many tears, they will overflow your lower lid and run down your cheeks.
Some people have to help stimulate the production of natural tears. This disease is called Dry Eye Syndrome or Sjogren's Syndrome. People who have diseases like rheumatoid arthritis or lupus often have this condition. They must use artificial tears up to every 10 to 15 minutes, and apply other medications to their eyes before going to bed as part of the treatment to improve the condition of their eyes.
2006-11-01 23:55:28 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Maybe its so that others can sense our emotions. We are communal creatures. We need each other. So, it only stands to reason that we should know each others feelings.
2006-11-02 07:45:07 · answer #2 · answered by Ha Ha! 3 · 0⤊ 0⤋
Its just like vomitting. Better out than in.
2006-11-02 07:49:47 · answer #3 · answered by ultimate quality 1 · 0⤊ 0⤋
i dunno cause we laugh so much its causes tears!havent a clue!good question
2006-11-02 07:43:23 · answer #4 · answered by bekcie 2 · 0⤊ 0⤋