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(B) When a baby is born and takes its first breath, the lungs expand and fill with air. Even after a forceful expiration, a certain volume of air rema

Vedclass · Accepted Answer

Residual volume of air

Vedclass · Answer

(B) When a baby is born and takes its first breath, the lungs expand and fill with air. Even after a forceful expiration, a certain volume of air remains in the lungs, which is known as the $Residual 	ext{ } Volume$ $(RV)$. If the baby has never breathed, the lungs remain collapsed and do not contain any $Residual 	ext{ } Volume$. Therefore, by testing the lungs for the presence of $Residual 	ext{ } Volume$ (often by checking if the lung tissue floats in water), it can be determined whether the baby had breathed or was stillborn.

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

If a newborn baby dies shortly after birth or is stillborn, how can it be determined whether the baby breathed or not?

Similar Questions

What is the vital capacity of our lungs?

Arrange the following terms based on their volumes in an ascending order.
$(a)$ Tidal Volume $(TV)$
$(b)$ Residual Volume $(RV)$
$(c)$ Inspiratory Reserve Volume $(IRV)$
$(d)$ Expiratory Capacity $(EC)$

Tidal volume is

The volume of air present in the lungs after a forceful expiration is called:

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