Which of the Following Is Incorrect If Blood Flow to an Area

question 72

Multiple Choice

Which of the following is incorrect if blood flow to an area of the lungs is reduced while airflow remains normal?

• A)The concentration of CO₂ in this area decreases.
• B)The change in CO₂ concentration causes 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.
• E)The change in O₂ concentration leads to decreased vascular resistance.

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Definitions:

Uncontrolled Bleeding

Severe bleeding that is not able to be stopped or controlled, posing a critical risk to health.

Syncope

Fainting; a transient form of unconsciousness.

Fainting

A temporary loss of consciousness and posture, typically due to a decrease in blood flow to the brain, known medically as syncope.

Cerebrovascular Accident

A stroke; hemorrhage in the brain.