Distinguish between (Any two):
$(a)$ $IRV$ and $ERV$
$(b)$ Inspiratory capacity and Expiratory capacity
$(c)$ Vital capacity and Total lung capacity

Which instrument helps in clinical assessment of pulmonary functions?

If Expiratory Reserve Volume $(ERV)$ is $1100 \text{ ml}$, Residual Volume $(RV)$ is $1200 \text{ ml}$ and Tidal Volume $(TV)$ is $500 \text{ ml}$, then what is the Functional Residual Capacity $(FRC)$ (in $\text{ ml}$)?

Lungs are made up of air-filled sacs,the alveoli. They do not collapse even after forceful expiration,because of

The largest quantity of air that can be expired after a maximum inspiratory effort is

The lungs are made up of air-filled sacs,the alveoli. They do not collapse even after forceful expiration because of: