Exhalation is the process of expulsion of air | vedclass

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(A) Exhalation (expiration) is the process by which air is expelled from the lungs.During exhalation:$(i)$ The diaphragm relaxes and moves upward to i

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(A) Exhalation (expiration) is the process by which air is expelled from the lungs.During exhalation:$(i)$ The diaphragm relaxes and moves upward to its dome-shaped position.$(ii)$ The external intercostal muscles relax,causing the ribs and sternum to move downward and inward,which reduces the volume of the thoracic cavity.$(iii)$ This increase in pressure inside the lungs relative to atmospheric pressure forces air out of the lungs.Looking at the provided figures,Figure $A$ shows the diaphragm moving upward and the ribs moving inward/downward,which correctly represents the process of exhalation.

Exhalation is the process of expulsion of air through the respiratory tract. Which of the following figures illustrates the process of exhalation?

Similar Questions

The normal shape of the diaphragm is

Explain the mechanism of expiration.

The contraction of the diaphragm increases the volume of the thoracic cavity in which axis?

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

$I.$ Intra-pulmonary pressure remains less than the atmospheric pressure.
$II.$ There is negative pressure in the lungs compared to the atmospheric pressure.
In which of the above two situations does inspiration take place? Choose the correct option.

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