What Does NOT Occur When Blood Flow to an Area

question 39

Multiple Choice

What does NOT occur when blood flow to an area of the lungs is reduced but the area receives normal air flow?

• A) The concentration of CO₂ in this area decreases.
• B) The change in CO₂ concentration causes the smooth muscles of the local airways to relax.
• C) The change in CO₂ concentration leads to increased resistance of local airways.
• D) The change in O₂ concentration leads to dilation of local blood vessels.

---

Definitions:

Diagnostic

Pertaining to the identification of the nature or cause of a health problem, usually following a thorough examination or testing.

Statistical Manual

A publication containing standardized criteria, classifications, and statistical data used for diagnostic and research purposes in various fields.

Obsessive-Compulsive

A condition characterized by intrusive thoughts that produce uneasiness, apprehension, fear, or worry; and behaviors aimed at reducing the anxiety associated with these obsessions.

Anxiety Disorders

A collection of psychological disorders marked by intense anxiety and fear that affect everyday activities.