The Paranasal Sinuses, Together with Other Structures of the Upper

question 88

Multiple Choice

The paranasal sinuses, together with other structures of the upper respiratory tract,

• A) are where a small percentage of gas exchange occurs.
• B) form part of the respiratory membrane.
• C) are involved in filtering, warming, and humidifying incoming air.
• D) provide a large area for gas exchange between air and circulating blood.
• E) are lined by a delicate simple squamous epithelium.

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