________ are Immature Erythrocytes That are Present in the Circulation

Question

________ are immature erythrocytes that are present in the circulation.
A) Erythroblasts
B) Normoblasts
C) Myeloblasts
D) Band cells
E) Reticulocytes

Accepted Answer

Reticulocytes are immature erythrocytes that still have some remnants of ribosomal RNA visible under a microscope. They are present in the circulation for about 1-2 days before maturing into fully functional erythrocytes. Erythroblasts and normoblasts are also immature erythrocytes, but they are not normally present in the circulation. Myeloblasts and band cells are immature forms of white blood cells, not erythrocytes.