High School

The local matching of blood flow with ventilation in the lungs is ________.

A. Chloride shifting
B. Ventilation-perfusion coupling
C. The Bohr effect
D. The Haldane effect

Answer :

Final answer:

The local matching of blood flow with ventilation in the lungs is B) Ventilation-perfusion coupling. This ensures that blood flow matches areas with high ventilation. The Bohr effect and the Haldane effect relate to hemoglobin's interaction with oxygen and carbon dioxide, while chloride shifting relates to carbon dioxide transportation.

Explanation:

The local matching of blood flow with ventilation in the lungs is known as Ventilation-perfusion coupling. This biological principle ensures that the majority of blood flow matches areas with the highest rate of ventilation. In this process, the airways and blood vessels react to local levels of oxygen and carbon dioxide.

The Bohr effect and the Haldane effect are related to how oxygen and carbon dioxide bind to and release from hemoglobin. Chloride shifting is a process that happens within erythrocytes that allows the body to transport carbon dioxide from tissues and to the lungs.

The correct answer is Option B.

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