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What does the mucous membrane of the turbinates do for the passage of air into the lungs?

increases oxygen

decreases mucus

warms and moistens the air

increases carbon dioxide

Which of the following best defines the pharynx?

an external opening of the body that takes in air

a small bone in the wall of the nasal cavity

an airway leading from the nose to the trachea

an air-filled cavity in the head

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