Which of these structures is/are NOT properly matched with one of its/their functions?

a. pharyngeal tonsil: trap and destroy pathogens entering the nasopharynx in air

b. paranasal sinuses: house olfactory receptors

c. nasopharynx: conduct air toward and from the larynx

d. nasal conchae: increase the mucosal surface area exposed to air

Option B, paranasal sinuses: house olfactory receptors

Explanation:

Paranasal sinuses are located between the facial and skull bone. These are cavities in the maxilla, frontal, sphenoid, and ethmoid bones which ultimately drain into the nasal cavity.

Their functions include the following -

a) Heating the inhaled air

b) Humidifying the inhaled air

c) Make skull lighter

d) Produce sound by resonating the voice

e) Lubricate the nasal cavity

Hence, option B is correct