What is necessary for the lungs to remain expanded? - ProProfs Discuss
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What is necessary for the lungs to remain expanded?

This question is part of Chapter 22: Respiratory System
Asked by Lilmama, Last updated: Nov 12, 2020

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2 Answers

Markda John

Markda John

Markda John
Markda John

Answered Mar 19, 2018

The human body is an amazing thing. All of our parts and organs work together in sync in order for our body to operate correctly. The lungs, for example, must work just right to keep us breathing. It is necessary for the intrapleural pressure to be negative for the lungs to remain inflated. This is the normal state of the lungs, the pressure within the pleural cavity is slightly less than atmospheric pressure.

This is where the term negative pressure comes into play. A condition called Pneumothorax will occur if the intrapleural pressure becomes equal to the atmospheric pressure. Pneumothorax can also be referred to as a collapsed lung.

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John Smith

John Smith

John Smith
John Smith

Answered Jul 03, 2017

The intrapleural pressure must be negative.
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