Q. On an average how many million Red Blood Cells are present in a healthy human adult man per mm3 of blood?
Answer: 5 - 5.5
Notes: The primary function of the red blood cells, or erythrocytes, is to carry oxygen from the lungs to body tissues and to transfer carbon dioxide from the tissues to the lungs. The RBC is a count of the number of red blood cells per cubic millimeter of blood. Newborns: 4.8 - 7.2 million Adults: (males): 4.6 - 6.0 million