Blood and its Components
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Blood:consists of plasma, blood cells and platelets
It is primarily a medium for the carriage of oxygen, nutrient materials, hormones and anti-infective agents (i.e. antibodies) to the tissues and for the removal of CO2 and other waste products from the tissue and t he elimination from their body.

The almost ubiquitous distribution of blood in the body and it's unique chemical characteristics make it the most efficient transport system.

Plasma: plasma protein, exert an osmotic pressure, which influence the exchange of fluids between blood and tissues.

Platelets: along with plasma contains all the factors required for clotting. Thus loss of blood from injury is reduced by inherent properties of Blood itself.The average life of platelets is 8-days whether we donate it or not. This will die in 8-days.


Bloodcells: There are two types of blood cell namely:
  • Red Blood Cells(RBC)
  • White Blood Cells (WBC)
Red Blood cells : RBC are non-nucleated bi-concave discs. The colour of blood is due to the presence of RBC. RBC consists of an elastic framework in which haemoglobin is deposited.

The body produces between 20,00,000 and 1,00,00,000 new RBC each second. As RBC carries oxygen, the concentration of O2 is lower when their supply falls below normal. However, the defficienct stimulates the red bone marrow to produce excess supply of new RBC. The additional cell amake up for blood loss

The average life span of RBC is 120 days. After that time,RBS starts losing it's ability to transport O2. Thus you do not loose blood after donation as on the normal course your RBC are destroyed after every 120 days. Your body will replenish the RBC count.




Help line no's: 9810125104, 9810125105, 9810125106,
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e-mail: safblood@del3.vsnl.net.in
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