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Why do we cry? The three types of tears
Paula Tatés and Emilia Cajas
We cry thirty gallons in a year!
All of us cry when we are happy, sad or when things just get to us.
Basal tears
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The basal tears that Iris constantly produces form a thin coating of three layers that cover her and keep dirt and debris away
-When we cut an onion we cry and this is called :
Syn-Propanethial S-oxide
Reflex tears
We have special lacrimal glands to make new tears and special tubes, called lacrimal puncta to drain old ones away.
The gas stings us; these are the:
- They are designed to wash away harmful substances of particles
Reflex tears
Emotional tears
When someone is either too sad or too happy you cry; this contains higher levels of stress hormones
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