Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909



Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909
Textbook Problem

At rest, the normal pleural pressure change during quiet breathing is about

A. 0-2 mm Hg.

B. 2-4 mm Hg.

C. 4-6 mm Hg.

D. 6-8 mm Hg.

Summary Introduction


The pleura is the membrane that surrounds the lungs. It is two-layered. One of the layers is in contact with the lung and the other is in contact with the thoracic cavity. A fluid is present in the space between these two layers, which is called the pleural cavity. The pleural pressure also acts in the pleural cavity surrounding the lungs. It is a negative pressure, which means it is less than the atmospheric pressure. There are different modes of breathing. One of them is quiet breathing, which is also known as eupnea. This type of breathing occurs in rest and does not require the person to consciously think for the process. Quiet breathing can be simply referred to as the resting respiratory rate.


Justification/explanation for the correct answer:

Option (b) is given as “2–4 mm Hg.” The range of normal pleural pressure is about 2.5 mm Hg during the rest state. It is always in negative and is below the barometric pressure. Hence, option (b) is correct.

Explanation for the incorrect answers:

Option (a) is given as “0–2 mm Hg.” It usually takes place during the start of inspiration. The exertion of the diaphragm is about 1.5 cm during normal breathing. This infers to a pleural pressure change of about 2 to 4 mm Hg...

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

The nutrient standards in use today include all of the following except. a. Adequate Intakes (AI) b. Daily Mini...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Why don’t red dwarfs become giant stars?

Horizons: Exploring the Universe (MindTap Course List)

What is the function of the central vacuole in plants?

Biology: The Dynamic Science (MindTap Course List)