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Chapter 39: Q.22 (page 1147)

How would increased airway resistance affect intrapleural pressure during inhalation?

Short Answer

Expert verified

Increased resistance in the airways (bronchi) can lead to airway compression.

Step by step solution

01

Step 1. Introduction 

Intrapleural pressure refers to the pressure within the pleural cavity. Normally, the pressure within the pleural cavity is slightly less than the atmospheric pressure, which is known as negative pressure.

02

Step 2. Explanation 

Increased airway resistance affects the volume and the pressure inside the lung; therefore, the intrapleural pressure would be less negative and breathing would be more difficult.

During inspiration, the diaphragm and the inspiratory intercostal muscles actively contract, leading to the expansion of the thorax. The intrapleural pressure becomes more subatmospheric or more negative.

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Most popular questions from this chapter

Which is the order of airflow during inhalation?

a. nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli

b. nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli

c. nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli

d. nasal cavity, trachea, larynx, bronchioles, bronchi, alveoli

Which of the following statements about the circulatory system is false?

a. Blood in the pulmonary vein is deoxygenated.

b. Blood in the inferior vena cava is deoxygenated.

c. Blood in the pulmonary artery is deoxygenated.

d. Blood in the aorta is oxygenated

Describe the function of these terms and describe where they are located: main bronchus, trachea, alveoli, and acinus.

How does the administration of 100 percent oxygen save a patient from carbon monoxide poisoning? Why wouldn鈥檛 giving carbon dioxide work?

Explain how a puncture to the thoracic cavity (from a knife wound, for instance) could alter the ability to inhale.
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