Which of the following cell types is the most abundant in blood?

Erythrocytes, commonly known as red blood cells, are the most abundant cell type in the blood. Their primary function is to transport oxygen from the lungs to the tissues and carry carbon dioxide from the tissues back to the lungs for exhalation. Erythrocytes make up about 40-50% of the total blood volume.

This high abundance is crucial for maintaining adequate oxygenation of body tissues, as the body relies on these cells to deliver oxygen efficiently. In contrast, other cell types such as lymphocytes, which are involved in immune response, and platelets, which play a role in blood clotting, are present in significantly lower numbers. Neutrophils, a type of white blood cell that helps fight infections, are also less numerous compared to erythrocytes. Thus, the predominance of erythrocytes in terms of quantity underscores their essential role in maintaining physiological functions related to respiration and overall cellular metabolism.