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Question
What is blood ? Describe its functions in the human body ?
 Question Submitted By :: General-Science
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Blood is the bright red fluid that is pumped from the heart
and is circulating in human body through arteries, veins and
capillaries. It is not a mere liquid, for there are numerous
minute bodies floating in it. These area known as
corpuscles. Some of them are red and some white. Red
corpuscles form nearly one half of the volume of blood.
Hence the colour of the blood is red. White corpuscles are
very little in blood-only 7,500 in one cubic millimeter of
blood. But this meager quantity of white cells is vitally
important for the human body. They perform a very important
function because they have the power to eat up invading
becteria and thus protect the body from disease.
Functions of blood are :

(a) Blood absorbs the food-constituents from the food canal
and distributes them to the tissues. The changes undergone
by the food in different workshops enable the food
constituents to mix with the blood .
(b) Blood absorbs the oxygen contained in the air, which is.
Breathed in and takes it all over the body of oxidation. Red
corpuscles of the blood carry out this function of carrying
the oxygen.
(c) Blood carries away the away the waste materials that are
formed in the tissues to the lungs, kidneys and the skin
from where they are thrown out.
(d) Besides the function given above, blood serves another
important purpose, that of defence. The white corpuscles
constitute the arm y of the human body. When any bacteria
enters the body, it attacks the tissues and causes
disease. The white corpuscles fight with the bacteria,
destroy eat it up.
 
Is This Answer Correct ?    115 Yes 23 No
Guest
 
Answer
# 2
blood is a red fluid made up of RBC's, WBC's, platelets and
haemoglobin.Circulating throughout the body through
arteries, veins and capillaries.
it is not a perfect liquid but it contains some floating
bodies named corpuscles.
generally it's function is to flow in our body and kep us
alive.
 
Is This Answer Correct ?    29 Yes 8 No
Vidita Gupta
 
 
 
Answer
# 3
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.
 
Is This Answer Correct ?    9 Yes 1 No
B.madhav
 
Answer
# 4
blood is a fluid tissue in the body 
Is This Answer Correct ?    2 Yes 9 No
Mary
 
Answer
# 5
blood is the red substance by the heart to all parts ofthe
bold
 
Is This Answer Correct ?    9 Yes 26 No
Kamsy
 
Answer
# 6
Blood is the stuff that is spilt from the SS mens knives of
from the jews.
 
Is This Answer Correct ?    13 Yes 53 No
Rudolf Hess
 

 
 
 
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