Answer :
Final answer:
Mucous membranes are important protective barriers found in body openings to trap pathogens and maintain health.
Explanation:
Mucous membranes are found in various parts of the body including the respiratory tract, gastrointestinal tract, and genitourinary tract. These membranes provide a mechanical barrier to pathogens and other particles at body openings, secreting mucus to trap pathogens.
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