The connective tissue called blood is a very vital component in a human body. Various number of living cells are suspended in them and this blood with these living cells is called as Plasma 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 transportation, protection and regulation. It 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 allows the oxygen to different tissues and organs of 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. This blood also helps in nutrients recycling and also the hormones throughout the human body.
White Blood cells– These are also called as Leucocytes. WBC’s act as defence agents against the infections in the human body. The WBC’s produce a special kind of protein in the human body called as antibody which recognizes and fights against the foreign elements in 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.
Difference Between Red blood Cells and White blood Cells
|Sr.no||Red Blood Cells||White Blood Cells|
|1.||RBC’s are also called as erythrocytes.||White Blood Cells are also called as Leucocytes|
|2.||The red blood cells do not have the nucleus||They are characterised by the presence of a large central nucleus|
|3.||Due to the presence of pigment haemoglobin in them, they give red color to the blood||These cells do not have any kind of pigment in them, hence these are colorless|
|4.||RBCs appear as biconcave disc in shape||These have an irregular shape|
|5.||These cells have a life -span of about 120 days||These have a life -span of around 4-30 days which depends upon the body|
|6.||Only one kind of RBC’s are found in the blood||Different types of WBC’s are found in the blood such as neutrophils, B lymphocytes, T lymphocytes, monocytes, basophils,eosinophils.|
|7.||The function of RBC is to supply oxygen to different parts of human body and carry out the carbon dioxide as waste product||The function of WBC is to produce antibodies in order to fight against diseases|
|8.||RBC ’s are produced in the red bone marrow||These cells are produced in the lymph nodes and spleen, etc.|
|9.||The components of red blood cells are haemoglobin||The components of white blood cells are antibodies with the presence of MHC antigen cell markers.|
|10.||These cells make up around 36-50% of human blood||They make up around 1% of the human blood|