Final answer:
The passage of inhaled air moves through the nose or nasal cavity, to the pharynx, larynx, trachea, bronchi, bronchioles, and lastly the alveoli.
Step-by-step explanation:
Inhaled gas moves through the respiratory system following this order: it starts in the nose or nasal cavity, moves to the pharynx, then passes through the larynx, proceeds into the trachea, branches into the bronchi, then into the bronchioles, and finally reaches the alveoli where gas exchange occurs. As we inhale, air is filtered, warmed, and moistened in the nasal cavity. The air then travels through the pharynx, larynx, and trachea into the lungs. Within the lungs, the air passes through the bronchi, which branch out into smaller bronchioles. The bronchioles lead to alveoli, which are tiny air sacs where oxygen is exchanged for carbon dioxide through a process known as simple diffusion.