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ATI LPN · Medical Surgical Nursing · NCLEX PN Questions on Respiratory System

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which of the following gases is the most abundant in Earth's atmosphere?

A. Oxygen

B. Nitrogen

C. Carbon dioxide

D. Argon

Correct Answer: Nitrogen

Question 2 of 5

Regarding bronchial tone:

A. substance P causes bronchoconstriction

B. constriction is caused by sympathetic discharge

C. dilation is caused by parasympathetic discharge

D. maximal bronchoconstriction occurs at 4am

Correct Answer: substance P causes bronchoconstriction

Question 3 of 5

Which of the following infections can be diagnosed using a skin test similar to the tuberculin test?

A. histoplasmosis

B. cryptococcosis

C. blastomycosis

D. aspergillosis

Correct Answer: histoplasmosis

Question 4 of 5

All the following laboratory values are consistent with pulmonary fibrosis EXCEPT?

A. Increased residual volume

B. Increased vascular resistance

C. Normal or above normal FEV1/FVC

D. Decreased lung compliance

Correct Answer: Increased residual volume

Question 5 of 5

The outermost layer of the pericardium, which consists of inelastic dense irregular connective tissue, is called the

A. parietal layer of pericardium

B. serous pericardium

C. fibrous pericardium

D. epicardium

Correct Answer: fibrous pericardium

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