Arrange the given steps of expiration in the | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The process of expiration occurs in the following sequence:$1.$ Relaxation of the diaphragm and the intercostal muscles returns the diaphragm and

Vedclass · Accepted Answer

$I \rightarrow II \rightarrow IV \rightarrow III$

Vedclass · Answer

(A) The process of expiration occurs in the following sequence:$1.$ Relaxation of the diaphragm and the intercostal muscles returns the diaphragm and sternum to their normal positions $(I)$.$2.$ This movement reduces the thoracic volume and,consequently,the pulmonary volume $(II)$.$3.$ The reduction in pulmonary volume leads to an increase in intra-pulmonary pressure to a level slightly above the atmospheric pressure $(IV)$.$4.$ This pressure gradient causes the air to be expelled from the lungs,which is known as expiration $(III)$.Therefore,the correct sequence is $I \rightarrow II \rightarrow IV \rightarrow III$.

Arrange the given steps of expiration in the sequence of events occurring first:
$I.$ Relaxation of the diaphragm and sternum
$II.$ Reduction of the pulmonary volume
$III.$ Expulsion of air from the lungs
$IV.$ Increase in intra-pulmonary pressure
Choose the correct option.

Similar Questions

Expiration occurs due to

Bucket-handle movement is seen in

What happens to the volume of the pulmonary cavity when there is an increase in the volume of the thoracic chamber?

What is the difference between pulmonary respiration in frogs and human respiration?

What happens when the pressure within the pulmonary cavity is higher than the atmospheric pressure?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the given steps of expiration in the sequence of events occurring first:$I.$ Relaxation of the diaphragm and sternum$II.$ Reduction of the pulmonary volume$III.$ Expulsion of air from the lungs$IV.$ Increase in intra-pulmonary pressureChoose the correct option.