Correct! Mucous membranes line cavities that are open to the outside of the body, and thus can be found in the oral, nasal, vaginal, uterine, tracheal, and gastrointestinal spaces. The epithelia vary between simple columnar (ciliated or nonciliated), stratifed squamous nonkeratinized, and pseudostratified columnar (ciliated or nonciliated). The actual mucous production depends on the presence of goblet cells, a type of unicellular gland. Lets return to the original question.

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