Blood is the fluid connective tissue which plays a very vital component in a human body. There are a various number of other living cells that are suspended in blood and Plasma is one among the living cells which makes up around 55 % of the human blood in the body. The cells that are present in the human blood are Red blood cells, white blood cells, and platelets.
The blood performs three major functions in the human body namely:
- Regulation of body temperature and also regulates the pH level of the body.
Red Blood Cells
The Red blood cells are also called to as erythrocytes. These RBC’s store the hemoglobin in them which is a respiratory pigment binding to oxygen or the carbon dioxide. This helps in the movement of the oxygen to different tissues and organs of the human body by taking away the carbon-dioxide. Hemoglobin mainly comprises of iron which combines with the oxygen, thus giving the reddish color to the blood. The main functions of the RBCs are the transportation of nutrients and the hormones throughout the human body.
White Blood cells
The white blood cells are also called as Leucocytes. TheseWBC’s act as defense agents against the infections in the human body. They produce a special kind of protein called as an antibody which recognizes and fights against the foreign elements invading the human body. These cells are classified further as granulocytes and agranulocytes. The granulocytes have the visible granule-like structures in the cell bodies, and that of the agranulocytes do not have it. The three kind of granulocytes are neutrophils, basophils, and eosinophils. White blood cells are known to perform various complex functions in the human body.
Let us learn more differences between Red blood cells and white blood cells.
Difference between Red Blood Cells and White Blood Cells
RBC – Red Blood Cells
WBC – White Blood Cells
|Red blood cells are called as Erythrocytes.||White Blood Cells are called as Leucocytes or Leukocytes.|
|RBCs appear as biconcave disc in shape.||These have an irregular shape.|
|Size varies from 6 – 8 µm in diameter.||Size varies from 12 – 17 µm in diameter.|
|These cells have a lifespan of about 120 days.||These have a lifespan of around 4-30 days which depends upon the body.|
|The red blood cells do not have the nucleus at maturity.||They are characterized by the presence of a large central nucleus.|
|Due to the presence of hemoglobin, these cells are red in color.||These cells are colorless, due to the absence of pigment.|
|Only one kind of RBC’s is found in the blood.||Different types of WBC’s are found in the blood such as neutrophils, B lymphocytes, T lymphocytes, monocytes, basophils, eosinophils.|
|They help in transport of respiratory gases to different parts of human body||They help in producing antibodies to fight against diseases causing microbes.|
|RBC ’s are produced in the red bone marrow||These cells are produced in the red bone marrow, lymph nodes, and spleen, etc.|
|The components of red blood cells are hemoglobin.||The components of white blood cells are antibodies with the presence of MHC antigen cell markers.|
|These cells make up around 36-50% of human blood.||They make up around 1% of the human blood.|
|They are about 5 million/ mm³ of blood.||They are about 7000–8000/mm³ of blood.|
|The process of formation of RBC is known as erythropoiesis.||The process of formation of WBC is known as leukopoiesis.|
|These cells move between the cardiovascular systems.||These cells move between the cardiovascular and lymphatic systems.|
|Low count of RBC’S results in Anaemia.||Low count of WBC’S results in Leukopenia.|
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