The lungs do not collapse during breathing an | vedclass

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Question

(D) The lungs do not collapse even after forceful expiration because of the presence of negative intrapleural pressure. This negative pressure is gene

Vedclass · Accepted Answer

There is negative intrapleural pressure acting on the lung wall.

Vedclass · Answer

(D) The lungs do not collapse even after forceful expiration because of the presence of negative intrapleural pressure. This negative pressure is generated by the pleural membranes,which act as a suction force that keeps the lungs expanded against the chest wall. Because of this constant negative pressure,the lungs are held in a stretched state,preventing them from collapsing completely. Consequently,a certain volume of air,known as the $Residual  Volume$ $(RV)$,always remains in the lungs and cannot be expelled.

The lungs do not collapse during breathing and some air always remains in the lungs which can never be expelled because:

Similar Questions

State the sequence of events for inspiration (breathing in).
$I$ - Increase in lung volume
$II$ - Decrease in intrapulmonary pressure
$III$ - Contraction of respiratory muscles
$IV$ - Increase in thoracic volume
$V$ - Air rushes into the lungs

Due to the presence of which structure is the pulmonary ventilation system in humans better developed than in reptiles and birds?

Inspiration is initiated by

The normal shape of the diaphragm is

Which muscles undergo contraction during normal expiration?

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