Tidal volume is the amount of air that is inhaled or exhaled during a normal breath. It is a key measurement in respiratory physiology, helping to assess lung function and overall health. For an average adult, tidal volume is typically around 500 milliliters per breath. This measurement is important in various medical settings, such as during pulmonary function tests or when monitoring patients on ventilators. Changes in tidal volume can indicate respiratory issues or the need for adjustments in treatment. Understanding tidal volume helps healthcare professionals provide better care for patients with breathing difficulties.