What is the correct pathway of air from the environment to the alveoli?

The correct pathway of air from the environment to the alveoli is accurately described in the choice that includes the sequence: Mouth → Pharynx → Larynx → Trachea → Bronchi → Alveoli. This pathway reflects the anatomy of the respiratory system and the route air takes when it enters the body.

When air is inhaled, it first enters through either the mouth or the nose. It then travels into the pharynx, a muscular tube that serves as a passageway for air and food. From the pharynx, air passes through the larynx, which contains the vocal cords and serves as a gateway to the trachea. The trachea, often referred to as the windpipe, extends downwards and branches into the bronchi—two main passageways that lead into each lung. Finally, the air travels through the bronchi into smaller bronchioles and eventually reaches the alveoli, which are tiny air sacs where gas exchange occurs.

This detailed sequence emphasizes the correct anatomical structures and their order in the airflow pathway, making it clear why the provided pathway aligns with respiratory physiology. Each part of the pathway plays a crucial role in filtering, humidifying, and directing the air to the alveoli where