
There are three types of tears produced by our eyes which are classified as basal, reflex and emotional (psychogenic) tears .
Basal tears, which are the primary tear, help keep the eye surface nice and moist. The chemical components of this tear class allow it to form an adherent, thin film over the eye to provide general protection and moisture.
Sometimes we may get things like dust or a pellet from a Red Ryder BB gun in the eye. We all make mistakes. Such irritants will induce the response of reflex tears. Reflex tears hold similarity to basal tears, but are distinct in having chemical components that more readily allow elimination of particles and irritants (like dust or onion vapors) and microorganisms.
The final class of tears, and the ones that produce many scientific questions, are emotional tears. Some studies and scientists indicate this class of tear, within humans, are different within males and females and also may have a distinct evolutionary origin and physiological purpose.

Women tend to have higher prolactin levels, nearly double, than that of men and this may be why women cry a bit more easily when under stress.
Research shows that suppressing emotional tears may contribute to conditions such as hypertension and heart disease.
God gave us beautiful eyes to see, learn & communicate.
Why do some use it as emotional blackmail?
眼泪
大哭一场能解压和释放压抑的心情
累了,能不去想不开心的事。
算命师说过它是如砖石一般珍贵的东西
无论多委屈,多残忍,
都不要让宝贵的泪水轻易留下来。
人们常说时间能淡化一切
为何却觉得曾经拥有比失去还痛苦?
最怕男生哭,因为自己不爱哭,也不容易哭。
前几天,看到男友看戏时感动的眼眶都湿了。
那一刻,我吓倒了,觉得时间停了。
不管发生什么大事,总是隐瞒自己真正的情绪。
但是却会在意想不到的时候,流下了眼泪。
男人歌,唱给谁来听,下一首有没有你心情。
男人歌,原来,唱的都是不敢说的。。。
心情。
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