Functional residual capacity $(FRC)$ includes:

What is the vital capacity of our lungs?

During normal respiration without any effort,the volume of air inspired or expired is called:

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 $\text{ ml}$)?

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

Where is the residual air mostly found?