Final answer:
Mucus plays a role in innate immunity as part of the body's physical barriers, trapping and removing pathogens and foreign particles to prevent infections.
Step-by-step explanation:
Mucus plays a role in innate immunity as part of the body's physical barriers. Mucus is produced by certain cells in the respiratory, digestive, and reproductive systems, and it helps to trap and remove pathogens, dust, and other foreign particles from these systems. By capturing and preventing the entry of harmful substances, mucus helps to prevent infections and maintain overall health.
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