A Subject Referred for Pulmonary Function Tests Because of Shortness

question 24

Multiple Choice

A subject referred for pulmonary function tests because of shortness of breath has an FEV₁ of 98%.This finding is suggestive of:

• A) Restrictive lung disease
• B) Obstructive lung disease
• C) Normal lung function
• D) Upper airway abnormality

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Definitions:

Substance P

A neuropeptide involved in the transmission of pain and other sensory information to the central nervous system.

Pheromones

Chemical substances produced and released into the environment by an animal, affecting the behavior or physiology of others of the same species.

Cytokines

Signaling proteins secreted by cells, playing a critical role in immune system responses and inflammation.

Pyrimidines

A class of nitrogenous organic compounds with a single six-member ring, found in nucleic acids (DNA and RNA).