Characteristics of Red Blood Cells Red blood cells, also known as erythrocytes, are one part of the blood. The characteristics of red blood cells or erythrocytes include:

  • The characteristics of the first red blood cells have a shape like a small disc or disc.
  • Red blood cells or erythrocytes have a concave surface like the shape of a biconcave plate.
  • There are quite a lot of red blood cells in the blood, which is around five million per cubic mm of blood. So it means that every one cc of blood contains five billion red blood cells.
  • Red blood cells or erythrocytes have a relatively small size, the diameter of red blood cells or erythrocytes is about 7.2 micrometers. So, for those who want to see red blood cells or erythrocytes, they must use a microscope
  • Red blood cells or erythrocytes do not have a nucleus or what is often called a cell nucleus.
  • Red blood cells or erythrocytes have a bright red color when they are just being produced
  • Red blood cells or erythrocytes contain a special protein known as hemoglobin. Hemoglobin is a special protein. Hemoglobin contains a yellow pigment. Hemoglobin is what determines whether or not the color of the blood is concentrated. Hemoglobin itself contains iron or Fe, iron is what helps provide oxygen in the blood. The amount of iron in red blood cells is about 25 trillion. While the hemoglobin itself is about 14 to 16 g/100 ml

Red blood cells are formed from cell division which is often known as erythropoeisis, ie red blood cells divide their body into two parts and the cells that have been split will divide again when they are mature, that is the process that will happen next. The average lifespan of red blood cells is about 120 days.

The place that produces red blood cells or erythrocytes is often known as the spinal cord. Red blood cells or erythrocytes are cells that can be formed by pluripotent stem cells. The formation of red blood cells or erythrocytes has several stages, including:

  1. The first stage is the formation of myeloid cells, this formation comes from hematoblasts, which then form erythroblasts.
  2. Proerythoblast- basiphilic erythrocyte- polychromatophilic erythoblast- normblast- polychromatophilic erythrocyte- erythrocyte
  3. In the Normoblast stage, the cell begins to detach from its nucleus. More precisely, namely in cells called normoblast cells. Furthermore, red blood cells begin to form reticulocytes, but still have a nucleus after which red blood cells or erythrocytes are formed.
  4. In the initial stage of proerythroblast cells, it takes 5 to 7 days for the cells to form red blood cells or erythrocytes. Starting from the initial stage of the formation of red blood cells to becoming red blood cells or erythrocytes that are ready to function, iron is needed. The presence of iron is very important and absolutely present during the formation of red blood cells. Read: Functions of Red Blood Cells and White Blood Cells

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