Multiple Choice
Which one of the following statements about pleural fluid and the pleural cavity is incorrect?
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22. The Respiratory System
Introduction to Lung Physiology
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What is the primary purpose of the maximized surface area in the lungs?
A
To reduce the energy expenditure during breathing
B
To increase the rate of blood flow through the lungs
C
To protect the lungs from pathogens
D
To enhance the exchange of oxygen and carbon dioxide
Verified step by step guidance1
Understand that the lungs are responsible for gas exchange, specifically oxygen and carbon dioxide, between the air and the bloodstream.
Recognize that the alveoli, tiny air sacs in the lungs, are the primary sites for this gas exchange.
Note that the alveoli have a large surface area due to their numerous and small structure, which is crucial for efficient gas exchange.
Consider that a maximized surface area allows for more oxygen to diffuse into the blood and more carbon dioxide to diffuse out of the blood simultaneously.
Conclude that the primary purpose of the maximized surface area in the lungs is to enhance the exchange of oxygen and carbon dioxide, making the process more efficient.
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