Mucus coating is required for multiple functions such as protection and dealing with substances or pathogens.
Cells differentiation occurs as cells changes from a basic type to a more specialized one. Some specialized cells include:
- Muscle cells.
- Immune cells.
- Epithelial cells.
Some of these cells including epithelial cells and mucous cells produce mucus. This particular substance has many functions but the most important are:
- Protecting mucous membranes including the lining of organs such as the lungs.
- Trapping some substances, especially nocive substances to eliminate them later.
- Containing important substances the body requires.
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