What is the volume of air moved in one cycle between breaths called?

The volume of air moved in one cycle between breaths is referred to as Tidal Volume (TV). Tidal Volume represents the amount of air inhaled or exhaled during a normal breathing cycle at rest, typically averaging about 500 milliliters in an adult. This measurement is crucial for understanding respiratory function and is used in various clinical assessments to evaluate a patient’s breathing efficiency and overall lung health.

Inspiratory Reserve Volume refers to the additional amount of air that can be inhaled after a normal inhalation, while Expiratory Reserve Volume describes the additional air that can be exhaled after a normal exhalation. Functional Residual Capacity involves the total amount of air left in the lungs after a normal exhalation, which does not pertain to the volume moved in a single breath cycle.

Understanding these various volumes can help in assessing respiratory mechanics and identifying any potential abnormalities in ventilation.