Definition of Red blood cell (erythrocytes):
Red blood cell is defined as the concave shape blood cells which are responsible to transport oxygen and carbon dioxide gases into the cells.
Characteristic of Red blood cells:
-Red blood cells are the concave disk by the shape.
-Red blood cell disk has diameter of approximately 6 to 8 um (Micrometer).
-Red blood cells are the flexible and mature cell does not have a nucleus.
-The shelf life of the RBC is 100 to 120 days. Red blood cell contains 40 to 45 % part of the cells in the blood.
-Red blood cell contains the haemoglobin which is responsible for transport the oxygen to the different cell of the body from the lungs.
Each red blood cell contains about 280 million haemoglobin molecules.
-Haemoglobin made up of protein and iron. The protein is called as globin. Globin protein contains four polypeptide chain. And the iron metal part of the molecule is known as heme so combine molecule is known as the Haemoglobin.
- Red blood cells are tare as it passes through the thin capillaries as red blood cells are squeezed into the capillaries
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