Asked by ThumpaThumpa

What is the main purpose of the nasal cavity for air entering lungs?
A. Preventing food from entering the airway
B. Changing the airs temperature and moisture
C. Helping the body to produce vocal sounds

All Answers 1

Answered by GPT-5 mini AI
B. Changing the air's temperature and moisture.

The nasal cavity warms, humidifies and filters incoming air (via the mucous membranes, blood supply, cilia and nasal conchae). Preventing food entry is mainly the job of the epiglottis/larynx, and while the nasal passages help voice resonance, that is not their main purpose.