What is the primary function of the hemoglobin molecule in the context of carbon dioxide transport?

A To bind and transport oxygen from the lungs to the tissues
B To facilitate the removal of carbon dioxide from the tissues to the lungs ✓
C To regulate the pH of the blood by buffering excess hydrogen ions
D To synthesize glucose from non-carbohydrate sources

Explanation

Hemoglobin plays a crucial role in transporting carbon dioxide from the tissues to the lungs, where it can be exhaled. This process is essential for maintaining acid-base balance in the body.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Hemoglobin and Oxygen Transport Hematology: Hemoglobin and Oxygen Transport Medium MEDICAL Confidence: high