تعبير عن الدموع بلأنجليزي tears scientifical subject

This subject answered

Those questions 

Happiness tears

Bride tears

1. Are there didn't types of tears?
2. Are happy tears and sad tears?
3. Why do we cry tears?

So there are three different types of tears. Psychic tears (happiness, sadness) are caused by extreme emotions. Basal tears are made to keep the cornea lubricated. Reflex tears (onions, tear gas) come out in response to something else.

Are happy tears and sad tears chemically different ? 

Scientifically, tears are divided into three different types, based on their origin. Both tears of grief and joy are psychic tears, triggered by extreme emotions, whether positive or negative. ... Reflex tears are secreted in response to an irritant, like dust, onion 

  

Why do we cry tears?

Share on Pinterest Crying is a natural response to emotions or irritants like dust in the eyes. ... They are released to flush out these irritants and protect the eye. Emotional: Humans shed tears in response to a range of emotions. These tears contain a higher level of stress hormones than other types of tear