Question

Define and name about capacities of the lungs.

Class : 9th
Subject : Biology
Topic : Respiratory System​

Answer 1

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Define and name about capacities of the lungs.

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Capacities of the lungs or respiratory volumes are approximately as follows :-

• » Tidal Volume : Air breathed in and out in a normal quiet breathing = 500ml.

• » Dead Air Space : The amount of tidal air left in respiratory passage and is non diffusible = 150ml.

• » Alveolar Air : The tidal air contained in air asc = 350ml.

• » Inspiratory Reserve Volume : Air that can be forcibly over and above tidal air = 300ml.

• » Expiatory Reserve Volume : Air that can be forcibly expelled out by maximum inspiration and expiration ( supplemental air ) = 1000ml.

• » Vital Capacity : The volume of air that can be taken in and expelled out by maximum inspiration and expiration = 4500ml.

• » Residual Volume : Some air is always left in the lungs after forceful expiration = 1500ml.

• » Total Lung Capacity : Maximum air which can at anytime be held in two lungs = 6000ml.

$\sf{hope~ it ~helps~ :)}$