alleryStart learning →Which pairing of terms with their meanings is correct?
AVentilation is airflow, perfusion is capillary blood flow
BVentilation is blood flow, perfusion is airflow in alveoli
CVentilation is diffusion, perfusion is airflow in bronchi
DVentilation is airflow, perfusion is lymph flow in lungs
Answer & Solution
Correct answer: A. Ventilation is airflow, perfusion is capillary blood flow
1. Two processes have to match for gas exchange to be efficient.
2. Ventilation is the movement of air into and out of the lungs.
3. Perfusion is the flow of blood in the pulmonary capillaries.
4. The second option swaps the two, which is the most common confusion between them.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.4 Gas Exchange_
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