What is the primary function of the chloride shift in red blood cells during carbon dioxide transport?

A To regulate pH levels in the blood ✓
B To facilitate the transport of oxygen to tissues
C To maintain electrolyte balance across cell membranes
D To enhance the buffering capacity of the blood

Explanation

The chloride shift helps to regulate pH levels in the blood by exchanging chloride ions for bicarbonate ions, which is crucial for maintaining acid-base balance during carbon dioxide transport.

Source

Guyton and Hall Textbook of Medical Physiology
Electrolytes and Acid-Base Balance Physiology Carbon Dioxide Transport Medium MEDICAL Confidence: high