Snot is produced by cup cells in the nasal mucosa.
Nasal mucosa contains a cup-shaped cells like goblet cells, cup cells can produce mucin, mucin is released to the outside of the cell, a large amount of water absorption, the volume can increase to about 500 times, resulting in snot. There is also a small portion of tears produced by the lacrimal ducts, which enter the nasal cavity through the nasolacrimal ducts.
When the nasal cavity is irritated or infected, for example, by a virus or if an allergic person inhales an allergenic substance, the body’s immune system produces antibodies to destroy these antigens, which are distributed on the surface of the mast cells in the nasal cavity.
The antibodies are distributed on the surface of the mast cells in the nasal cavity. The mast cells contain a large amount of histamine, and the combination of the antigen and the antibodies stimulates the mast cells to release the histamine, which in turn stimulates the cup cells to produce more mucin, resulting in more nasal discharge.
If the amount of snot is high or there is a change in color, you should go to the hospital in a timely manner, by the specialist to clarify the cause of the targeted treatment, so as not to miss the condition.