MICROANATOMY

Detailed explanation-1: -It is calculated by summing tidal volume, inspiratory reserve volume, and expiratory reserve volume.

Detailed explanation-2: -7 Residual volume. The residual volume (RV) is the volume of gas remaining in the lung at the end of a full expiration. It is calculated by subtracting the expiratory reserve volume from the functional residual capacity: RV = FRC−ERV, or RV = TLC−IVC.

Detailed explanation-3: -Residual volume is determined by two competing factors. The strength of the expiratory muscles and the inwards pull of the lungs tends to decrease residual volume. The outward pull of the chest wall tends to increase residual volume.

Detailed explanation-4: -Explanation for the correct answer The total volume of air accommodated in the lungs at the end of forced inspiration is known as Total Capacity(TLC). It is equal to vital capacity and residual volume.