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Which of the following is concerned with the exchange of the respiratory gases?

A.

Lungs

B.

Bronchi

C.

Alveoli

D.

Trachea

Answer and Explanation

The Correct Answer is C

A. Lungs:  lungs house alveoli but are not the site of gas exchange themselves.

B. Bronchi:  they conduct air but don’t exchange gases.

C. Alveoli:  this is the primary site where oxygen and carbon dioxide are exchanged.

D. Trachea:  it’s a passageway for air, not a site for gas exchange.


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Related Questions

Correct Answer is C

Explanation

A. Inferior/lower right lobe: Label #11 is on the right lung (viewer’s left side) and in the lower portion. This location corresponds to the inferior (lower) lobe of the right lung.

B. Superior/upper right lobe: this is labelled as #1.

C. Middle lobe: the right lung has three lobes: superior, middle, and inferior.

D. Superior/upper left lobe: this is labelled as #6.

Correct Answer is D

Explanation

A. Inferior/lower left lobe: The left lung is on the viewer’s right. The lower lobe of the left lung is positioned inferiorly (near the diaphragm) and would be closer to label #8.

B. Middle lobe: The middle lobe is only present in the right lung and lies below the superior lobe but above the inferior lobe.

C. Superior/upper right lobe: Label #1 is at the top part of the right lung.

D. Superior/upper left lobe: The left lung has only two lobes: superior and inferior. The superior lobe of the left lung would be in the corresponding location to label #6.

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