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Sunday, December 12, 2010

Functions of Blood In Human Body - Its Role And Significance


Red Blood Cells
(i) The plasma proteins maintain colloid osmotic pressure of the
blood(75% by albumins, 25% by globulins and almost none by

(ii) Blood helps to trasport materials,in the body including
nutrients,water,salts and waste products. All hormones are trasported
by blood from the endocrine tissues to the target cells.

(iii) Gases O2 and CO2 are trasported by blood.

(iv) Blood helps in body defences against disease, neutrophils and
monocytes engulf and destroy invading microorganisms e.g. bacteria.

(v) Blood provides immunity by the lymphocytes.

(vi) Blood produces interferon and antitoxins which are proteins,and
protects our body from nucleic acids and toxins of invading organisms.

(vii) Blood acts as a buffer to maintain the acid-base balance i.e.
concentration of H+ and OH- ions of the body.

(viii) Blood helps in maintaining the body temperature,
concentration of water and salts,thus helps in homoestosis.

(ix) Wall of Blood helps in the exchange of materials between blood
and body tissue through blood capillaries via interstitial fluid.

(x) Blood helps the body in maintaing the internal environment,by
producing heparin, histamines and also maintaing the amounts of
chemicals including water and salts in the body and body temperature
to a constant or nearly constant levels.

(xi) Blood helps in blood clotting process and seals the wounds,
that stop entry of pathogens into body.


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Anonymous said...

great but you do not say exactly what blood transports; e.g. digested or undigested

Anonymous said...

thank you for giving information give more infermation

Anonymous said...

Not useful

Anonymous said...

What is the role of blood ?
what care should be taken while receiving blood?

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Anonymous said...

nice.. i learned something :)

Anonymous said...

thank you me love you long time

Anonymous said...

Blood is very pley an important role in our body

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