Of the tears
There is no human being who has not shed tears.
Moreover, there are no mammals that have not shed tears.
Because every time we blink, tears flow. They are necessary to keep your eyes moist and clean and to stay healthy. Tears contain lipids, proteins, mucus and antibacterial substances, as well as salt, which is why they have the taste of the sea.
The tears are produced by the lacrimal gland at the back of the eyes, and every time we blink, they spread to the entire eye. The leftover tears are directed to a reservoir located in the nasal area. The mucus is caused by the fact that the reservoir is so close to the nose when crying.
These are basic tears, but there is another type of tears that has nothing to do with eyelid blinking: they are tears created by something strange. For example, reflexes, onions, smoke and tears produced by gases. The object is to clean the eye from these foreign particles.
Sorrow, sadness and joy also produce tears; their composition is not the same as the rest, because the goal is not to clean the eye. The tears generated by the feelings serve to cleanse the interior. We call these special tears tears tears. Because there's no room in the warehouse, they drip down the cheek.
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