The maximum volume of air a person can breathe in after a forced expiration is $:-$

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

State the volume of air remaining in the lungs after a normal breathing.

What is the additional volume of air that a person can expire by a forcible expiration?

Match List $I$ with List $II$ :

List $I$	List $II$
$A.$ Expiratory capacity	$I.$ Expiratory reserve volume $+$ Tidal volume $+$ Inspiratory reserve volume
$B.$ Functional residual capacity	$II.$ Tidal volume $+$ Expiratory reserve volume
$C.$ Vital capacity	$III.$ Tidal volume $+$ Inspiratory reserve volume
$D.$ Inspiratory capacity	$IV.$ Expiratory reserve volume $+$ Residual volume

Choose the correct answer from the options given below :

Complete the missing terms:
$(a)$ Inspiratory Capacity $(IC) = \dots \dots + IRV$
$(b)$ $\dots \dots = TV + ERV$
$(c)$ Functional Residual Capacity $(FRC) = ERV + \dots \dots$