Monday, November 30, 2009

Crying!!

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Tears are salty, watery secretions produced by the eye's lachrymal glands. The main job of tears is to keep the eyes constantly moist. Moisture is important to maintain transparency of the cornea ( the front part of the eyeball) and to prevent ulceration.

By lubricating the surface of the eye, tears aid movement of the eyelids in blinking. Tears also wash away small foreign bodies that enter the eye; and they contain a natural antiseptic. of course, tears function is expressing emotion- a trait exhibited only by humans.

1 comment:

TheEclecticElement said...

Intersting-I knew tears helped you, but I just didn't know the whole extent!

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