Snot is a sign that the body is working properly. These viscous and sticky substances, of different colors, play a very important role in protection and defense.
Everyone knows snot, but not many know what they really are and what their function is. Incredibly, the average adult produces about a liter of this substance through the nose and an additional liter through the throat each day.
Snot has different textures and colors. There are soft and hard, black and white, green and yellow. In general, they are related to dirt, but their main function has to do with preventing many undesirable particles from entering the respiratory system.
In one way or another, snot indicates whether a nose is working as it should or not. Although the habit of picking the nostrils to extract that sticky substance is very widespread, it is best to clean with a tissue.
What is nasal mucus?
Snot is spoken of to refer to the fluid that comes out of the nose. This is not the only mucous secretion that the body produces, but that name has become popular. Bronchial secretions are often called phlegm or expectoration .
Thus, mucus is a viscous fluid secreted by the epithelial cells of the nose and other organs. These cells have cilia, which are a kind of hair. These move mucus into the nostrils.
They fulfill several functions and the most important are the following:
They act as lubricants: they help keep the nose and sinuses moist. This protects from irritation caused by rubbing against an object or particle.
They are a protective shield: the tissue of the nostrils and sinuses is quite fine and delicate. Snot helps protect it.
They form a barrier: they help to trap and expel foreign particles that enter the nose, such as dust, pollen, bacteria and viruses.
In this way, the function of mucus can be synthesized by saying that it is a defense and protection mechanism against external agents that can enter the body through the nose. They are key to fighting allergies and colds.
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