EVERYDAY SCIENCE

Detailed explanation-1: -It is the total amount of air exhaled after maximal inhalation. The value is about 4800mL and it varies according to age and body size. It is calculated by summing tidal volume, inspiratory reserve volume, and expiratory reserve volume. VC = TV+IRV+ERV.

Detailed explanation-2: -The total volume of air accommodated in the lungs at the end of forced inspiration is known as Total Capacity(TLC). TLC is equal to. (where, TV= Tidal volume, IRV= Inspiratory reserve volume, ERV= Expiratory reserve volume, RV= Residual volume)

Detailed explanation-3: -Lung capacity or total lung capacity (TLC) is the volume of air in the lungs upon the maximum effort of inspiration. Among healthy adults, the average lung capacity is about 6 liters.

Detailed explanation-4: -Vital capacity (VC) refers to the maximal volume of air that can be expired following maximum inspiration.

Detailed explanation-5: -The total lung capacity (TLC) is the maximal volume of gas in the lungs after a maximal inhalation; thus it is the sum of the RV, ERV, VT, and IRV. TLC is approximately 6 L for a healthy 70-kg adult. The vital capacity (VC) is the maximal volume of gas exhaled during a forced exhalation after a forced inhalation.