Question

15. For micro-organisms mucous membrane is a:
Chemical barrier
b. Physical barrier​

Answer 1

Answer:

The mucous membranes lining the nose, mouth, lungs, and urinary and digestive tracts provide another nonspecific barrier against potential pathogens. Mucous membranes consist of a layer of epithelial cells bound by tight junctions. ... Mucus secretions also contain antimicrobial peptides.