Tuesday, 27 November 2012

The Physiology Of Crying

There are three types of tears. The first type is basal tears. Because the eyeball's surface is riddled with irregularities, basal tears create a thin coat over the eye which smoothes out the surface. This helps to protect and lubricate the eye. Without this lubrication, a person would see a very distorted picture, and it would be painful when the eyeball moves. The eye needs this coating all the time so the body must constantly replace these tears due to the loss caused by evaporation. A typical person will produce five to ten ounces a day. In addition, basal tears contain antibacterial chemicals.

Read more: Crying - The Physiology Of Crying - Tears, Eye, Basal, and Irritant - JRank Articles http://social.jrank.org/pages/170/Crying-Physiology-Crying.html#ixzz2DIyBUxXf

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