Why do we cry when we are upset?

Question

Why do we cry when we are upset?

Answer 1

There are three basic types of tears:

1:Basal tears: In healthy mammalian eyes, the cornea is continually kept wet and nourished by basal tears. They lubricate the eye and help to keep it clear of dust. Tear fluid contains water, mucin, lipids, lysozyme, lactoferrin, lipocalin, lacritin, immunoglobulins, glucose, urea, sodium, and potassium. Some of the substances in lacrimal fluid fight against bacterial infection as a part of the immune system.

2:Reflex tears: The second type of tears results from irritation to the eye by foreign particles, or substances such as onion vapors or tear gas or pepper spray. These reflex tears attempt to wash out irritants that may have come into contact with the eye.

3:Crying or weeping: The third category, generally referred to as crying or weeping, is increased lacrimation due to strong emotional stress or physical pain. This practice is not restricted to negative emotions; many people have been known to cry when extremely happy. In humans, emotional tears can be accompanied by reddening of the face and sobbing — cough-like, convulsive breathing, sometimes involving spasms of the whole upper body. Tears brought about by emotions have a different chemical make up than those for lubrication.

Answer 2

Biologically speaking, crying is likely an extension of babyhood "crying" for help from others in the social group. In most species, a cry for help from any juvenile in the group induces a desire to rescue the juvenile from whatever is threatening it. Other species grow into adulthood and develop an alarm call to warn the rest of the group. Humans can do that too but seem to retain crying as a baby-like call for help.

Answer 3

I don't, it must be a girl thing, also it may be a societal thing because primitive tribes in the Amazon do not

Answer 4

I think crying is one of our instinctive defense behaviors. People cry when they are upset for others to feel their sadness and for others to give thier symphathy. I based this on my observation on babies, although they cry even if they are not upset. Babies cry to call the attention of others and to portray they need something.

Ask a psychologist for a more professional approach.

Answer 5

Apparently, our "sad" tears are different in composition than our eye-rinsing tears. They contain more protein, which supposedly comes from hormones released when we are upset. Crying rids our bodies of these excess sadness hormones, restoring balance.

So a good cry can make you feel better.