In: Anatomy and Physiology
describe the total lung capacity columes
Total lung capacity(TLC): It is the measure of total air that lung can hold.or total volume of air at the end of maximum inspiration.
TLC =Residual volume(RV)+expiratory reserve volume(ERV)+Tidal volume(TV)+ inspiratory reserve volume(IRV)
Rv:volume of air remains in lunf after maximum forced expiration. This volume always remains in lung once a person has breathed in life after birth.
TV:Amount of air breath in /out during normal respiration.
ERV: Additional amount of air that can be exhaled after normal expiration
IRV:The additional amount of air that can be inhaled after normal inspiration.