How does air enter the lungs from the bronchial tree?

Air enters the lungs through a series of branching airways, which include the trachea, bronchi, and bronchioles. When a person inhales, air travels through the trachea, which splits into the right and left main bronchi. These bronchi further divide into smaller bronchi and eventually into tiny bronchioles that lead to the alveoli, where gas exchange occurs. This branching structure is essential for efficiently directing air into the lung's surface area, allowing effective oxygen uptake and carbon dioxide removal.

The other options do not accurately represent the complexity of the respiratory system's pathway for air. While the nasal cavity and larynx play vital roles in the respiratory process, they are part of the broader airway system. Air does not enter the lungs exclusively through these areas but rather through the entire branching network designed to optimize respiratory function.