After you measure TV and vital capacity, you must also calculate before you can determine total lung capacity. After you measure TV and vital capacity, you must also calculate before you can determine total lung capacity. inspiratory volume residual volume expiratory reserve volume inspiratory capacity

Residual Volume

Explanation:

Residual volume  is the measurement of volume of air that is remained in the lung after the maximum forceful expiration. Residual Volume varies with age, gender, physical activity level and height. After the measurement of Tidal volume and vital capacity it is also important to calculate residual volume.

activation of phospholipase c (plc) indirectly increases intracellular ions through inositol triphosphate (ip3).