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

About $1200\; mL$ of air is always known to remain inside the human lungs. It is described as

Listed below are four respiratory capacities $(i-iv)$ and four jumbled respiratory volumes of a normal human adult. Which one of the following is the correct matching of two capacities and volumes?

Respiratory capacities	Respiratory volumes
$(i)$ Residual volume	$2500 \; mL$
$(ii)$ Vital capacity	$3500 \; mL$
$(iii)$ Inspiratory reserve volume	$1200 \; mL$
$(iv)$ Inspiratory capacity	$4500 \; mL$

The vital capacity of the lung signifies the volume of air

Volume of air breathed in and out,while at rest is called

Match the following columns:

Column-$I$	Column-$II$
$P. TLC - IC$	$I. 500 \, mL$
$Q. IC - IRV$	$II. 1100$ to $1200 \, mL$
$R. TLC - VC$	$III. 1500$ to $1600 \, mL$
$S. ERV + TV$	$IV. 2100$ to $2600 \, mL$