While drinking a cola, you start laughing, causing some of it to come out of your nose. Why does this hurt when drinking cola normally does not?
A. There is a larger blood supply to the nasal cavity than oral cavity.
B. There are more free nerve endings in the nasal cavity than oral cavity.
C. The nasopharynx is lined by a serous membrane, while the oropharynx and laryngopharynx are lined by a mucous membrane.
D. The nasopharynx is lined by pseudostratified columnar epithelium, while the oropharynx and laryngopharynx are lined by stratified squamous epithelium.
Answer: D
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