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Write a Note on Erythrocytes. - Biology

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Question

Write a note on erythrocytes.

Solution

RBC (Red Blood Corpuscles) or Erythrocytes:

  • Erythrocytes are circular, biconcave and non-nucleated cells.
  • Their diameter is 7μ and are 2.5μ thick.
  • In adult male, RBC count is 5.1 to 5.8 million per cubic millimeter, while in female, it is 4.3 to 5.2 million per cubic millimeter.
  • Normal life span of a single RBC is about 120 days.
  • Formation of RBCs is called erythropoiesis.
  • Erythropoiesis in foetus, takes place in yolk sac, kidney, spleen and liver while in adults, it takes place in red bone marrow.
  • Stroma of RBC contains haemoglobin which helps in carrying respiratory gases.Old and worn out RBCs are destroyed in spleen and liver 

         

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APPEARS IN

 2016-2017 (March) (with solutions)
Question 6.3.1 | 2.00 marks
Solution Write a Note on Erythrocytes. Concept: Concept of Immunity.
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