Final answer:
Inhaling through the mouth results in a lower pharyngeal temperature compared to nasal inhalation due to less effective warming of air. The correct path of airflow is pharynx to larynx, then trachea, bronchi, and finally bronchioles.
Step-by-step explanation:
The pharyngeal temperature when a person inhales through the mouth is lower than when inhaling through the nose. This is because the nasal passages are more effective at warming and moistening the air than the mouth due to their structure and function. Nasal breathing involves the hair-lined nasal passages which filter particles and warm the air, making nasal breathing especially beneficial in cold and dry conditions. By contrast, mouth breathing bypasses these structures, leading to cooler air entering the pharynx.
When inhaled air travels from the pharynx, the correct order is pharynx → larynx → trachea → bronchi → bronchioles. Inhaled air does not go through the trachea before the larynx, as some of the incorrect options suggest. As the breath continues, it then reaches the alveoli for gas exchange.