What is the function of red blood cells?

Red blood cells (RBCs) are responsible for transporting oxygen from the lungs to all parts of the body and carrying carbon dioxide back to the lungs for removal.

They contain a protein called hemoglobin, which binds with oxygen and gives blood its red color. Hemoglobin allows red blood cells to efficiently transport oxygen to body tissues where it is needed for respiration and energy production.

Red blood cells also help maintain the balance of gases in the body by carrying carbon dioxide, a waste product of respiration, back to the lungs.

Their function is essential for supplying energy to cells and supporting the proper functioning of the body.