Final answer:
Mucous membranes are the linings of various tracts that serve as important entry points for microbes. These include the respiratory, gastrointestinal, and genitourinary tracts.
Step-by-step explanation:
Mucous membranes are the linings of the digestive, respiratory, urinary, and reproductive tracts. They are coated with the secretions of mucous glands. These mucosal surfaces serve as important portals of entry for microbes.
Examples of mucous membranes include the respiratory tract, gastrointestinal tract, and genitourinary tract. Mucous membranes are the linings of various tracts that serve as important entry points for microbes. These include the respiratory, gastrointestinal, and genitourinary tracts.