Mucus is a viscous secretion produced by mucous membranes that serves as a protective barrier and trap for pathogens. It plays a critical role in the immune responses of the respiratory, digestive, and other systems.
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Mucus contains antimicrobial peptides and enzymes like lysozyme that help neutralize pathogens.
In the gastrointestinal tract, mucus protects epithelial cells from digestive acids and enzymes.
Mucus traps bacteria and other foreign particles, preventing them from penetrating underlying tissues.
The production of mucus can be influenced by immune responses, such as during an infection or inflammation.
Goblet cells in the epithelial lining are primarily responsible for mucus production.