Which of the following represents the volume of air that reaches the lungs after accounting for the dead space?
Inspiratory reserve volume
Expiratory reserve volume
Tidal volume
Alveolar ventilation
Tidal volume represents the volume of air inspired or expired during normal respiration, but some amount of air is lost in the respiratory tracts. This is known as dead space. The amount of air that reaches the lungs after accounting for the dead space is known as alveolar ventilation.
Option 4 is the correct answer.