What is blood ? Describe its functions in the human body ?
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Answer Posted / b.madhav
BLOOD IS A FLUID THAT FLOWS IN THE BODY OF AN ORGANISM.IT
ACTS AS A MEDIUM TO TRANSPORT WATER, IMPORTANT GASES, WASTE
PRODUCTS AND NUTRIENTS INSIDE THE ORGANISM.IT CONSTITUES
ABOUT 8 PERCENT OF BODY WEIGHT IT CONTITUTES OF SEVERAL
CELLS ANDSTRAW COLOURED LIQUID CALLED PLASMA.THSE CELLS ARE
RBC ,WBC AND BLOOD PLATELETS.HUMANBEINGS HAS 4 TYPES OF
BLOOD GROUPS:A ,AB,B AND O.THEY CAN BE EITHER +VE OR -
VE.THE OXYGENTED BLOOD IS TRANSPORTED BY ARTERIES AND
DEOXYGENATED BLOOD BY VEINS.THE HEART IS THE PUMPING
STATION WHICH PUMPS BLOOD TO ALL PARTS OF THE BODY.THE
BLOODIS FILTERED IN KIDNEYS.THE HEART ,KIDNEYS,BLOOD
VESSELS AND BLOOD PLAY AN IMPORTANT ROLE IN HUMAN BODY'
CIRCULATORY SYSTEM.
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