Whenever one pictures or sees blood, it always appears bright red in color. This is because of the dominance of a number of red blood cells present in the blood, as opposed to the number of white blood cells and platelets present in the same amount of blood. The main function of the red blood cells is to transport oxygen from the heart to all other parts of the body. If the flow of blood in general, but especially the oxygen carrying cells, is cut off from a certain portion of the body or a certain organ, the tissue in that area of the body will slowly die by developing anemia or celiac disease. The red color of the body is attained from hemoglobin which makes up roughly about 35% of the overall weight of the red blood cell. Hemoglobin is essentially a protein that contains iron. An average human body contains about 30 trillion red blood cells in the entire body; however this count may vary depending on the age and sex of the person. The red blood cell count is an essential factor in deciding the overall health status of an individual.
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