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Red blood cells are found in arteries, veins, ventricles, and the heart. If red blood cells are found outside of these areas, there is usually a problem.
Introduction: Red blood cells. The purpose of red blood cells in the blood is to carry oxygen to body cells. The hemoglobin in red blood cells binds to oxygen received from the lungs, and these cells are circulated in the blood to all cells to supply needed oxygen.ed blood cells (also called RBCs or erythrocytes) carry oxygen from the lungs to the body's tissues and take carbon dioxide from the tissues back to the lungs. The red blood cells give blood its color.