Structure of Lungs and Gas Exchange

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What is the purpose of the thin wall of the alveolus?

To increase the surface area for gas exchange (correct)

To regulate the pressure inside the alveolus

To filter out harmful particles from the air

To produce surfactant to reduce surface tension

Which of the following correctly describes the movement of gases during respiration?

Oxygen and carbon dioxide both diffuse from the alveolus to the blood

Oxygen diffuses from the alveolus to the blood, and carbon dioxide diffuses from the blood to the alveolus (correct)

Oxygen diffuses from the blood to the alveolus, and carbon dioxide diffuses from the alveolus to the blood

Oxygen and carbon dioxide both diffuse from the blood to the alveolus

What is the purpose of the film of moisture lining the inside of the alveolus?

To increase the surface tension of the alveolus

To facilitate the diffusion of gases across the alveolar wall (correct)

To trap harmful particles in the air

To produce surfactant to reduce surface tension

What is the purpose of the capillaries surrounding the alveoli?

To facilitate the exchange of gases between the air and the blood Signup and view all the answers

What is the primary cause of emphysema?

Smoking cigarettes Signup and view all the answers

What is the purpose of the artery that brings deoxygenated blood to the capillaries surrounding the alveoli?

To transport deoxygenated blood to the lungs for gas exchange Signup and view all the answers

What is the purpose of the film of moisture lining the inside of the alveolus?

To facilitate the diffusion of gases across the alveolar wall Signup and view all the answers

What is the purpose of the thin wall of the capillary surrounding the alveoli?

To facilitate the diffusion of gases across the capillary wall Signup and view all the answers

What is the purpose of the surfactant produced in the alveoli?

To reduce the surface tension of the alveoli and prevent them from collapsing Signup and view all the answers

What is the primary function of the alveoli in the respiratory system?

To facilitate the exchange of gases between the air and the blood Signup and view all the answers

Structure of Lungs and Gas Exchange

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Questions and Answers

What is the purpose of the thin wall of the alveolus?

Which of the following correctly describes the movement of gases during respiration?

What is the purpose of the film of moisture lining the inside of the alveolus?

What is the purpose of the capillaries surrounding the alveoli?

What is the primary cause of emphysema?

What is the purpose of the artery that brings deoxygenated blood to the capillaries surrounding the alveoli?

What is the purpose of the film of moisture lining the inside of the alveolus?

What is the purpose of the thin wall of the capillary surrounding the alveoli?

What is the purpose of the surfactant produced in the alveoli?

What is the primary function of the alveoli in the respiratory system?

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