Erythrocyte:Acellthat contains hemoglobin and can carryoxygento the body. Also called ared blood cell(RBC). The reddish color is due to the hemoglobin. Erythrocytes are biconcavein形状,增加the cell's surface area and facilitates the diffusion of oxygen andcarbon dioxide. This shape is maintained by acytoskeletoncomposed of severalproteins. Erythrocytes are very flexible and change shape when flowing throughcapillaries. Immature erythrocytes, called reticulocytes, normally account for 1-2 percent of red cells in theblood.
