Main Structure And Function Of Red Blood Cells - scoopremarks

Main Structure And Function Of Red Blood Cells


                                          RED BLOOD CELL- Red Blood Cells Erythrocytes

  • RBC is also called erythrocytes.
  • There is a presence of pigment called haemoglobin which is also known as respiratory pigment because the pigment carry oxygen to different organs.(pigment gives colour to blood ) .
  • The shape of RBC is Biconcave disc shaped.
  • RBC has no nucleus present , in case of human( mammals).
  • The size of RBC are very small
  • The both vitamin B12 and folic acid are necessary for the  development of RBCs.

                                      FUNCTION OF Red Blood Cells

  • The most important function of Red Blood Cells is to transfer O2 and CO2 for transportation.
  • RBC contain enzyme called carbonic anhydrase which maintain the pH
    H2O+CO2=HCOO2- +H+
  • RBC maintain the blood pH or acid -base balance.
  • RBC are produced from Bone Marrow in case of adults.
  • In case of embryo they are not directly produced.
  • It is basically formed from different organs of body like liver , spleen and bone marrow .



                                                                BONE MARROW

  • It is semisolid substance present in long hollow bone.
  • There are two types of bone marrow:-
    1) Yellow bone marrow which is fatty tissue .
    2)Red bone marrow from when the cell of blood is developed.
    RBC don’t have intracellular machinery which control cell growth and repair .
    Life span of RBC is 120 days.
    When RBC is released in blood it remains in it for 120 days and are destroyed in spleen.
    ANEMIA :If Haemoglobin decreases ,it leads to the decrease in RBC which further leads to Anemia (lack of RBC )
    POLYCYTHEMIA :The condition when erythrocytes count is increase in haemoglobin .
    THROMBOPOIESIS : Development of platelets .

                                                              ROULEAUX FORMATION

  • When we keep blood in a vessel the blood will form a pile like structure . The formation of such structure is called ROULEAUX FORMATION.
  • When we keep the fluid in a tube the higher density one will be the settle down first . Similarly RBC will be the first one to settle because it have higher density due to the presence of iron and other minerals . Thus leading to the formation of pile like structure known a ROULEAUX   FORMATION.


                                           ERYTHROCYTE SEDIMENTATION RATE ( SED RATE )

  • Sed rate or erythrocyte sedimentation rate (ESR) is the blood test that can reveal inflammatory activity .
  • The rate at which red blood cells sediment in a period of one hour and form pile structure .
  • For male : the value of ESR should be 3-5 mm/hr.
  • For female :the value of ESR should be 4-7 mm/hr.
  • The Basal ESR is slightly higher in females. If any change in tissue indicated inflammation or any disorder.




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3 Responses

  1. November 18, 2018

    […] ‘poiesis’ meaning “to make”) is the process which produces red blood cells erythrocytes.It is stimulated by decreased O2 in circulation, which is detected by the kidneys, which then […]

  2. November 26, 2018

    […] are produced in the bone marrow, the same as the red cells and most of the white blood cells.  Platelets are produced from very […]

  3. November 28, 2018

    […] in the RBC count , haemoglobin and /or Hematocrit values resulting in the lower ability from the blood to carry oxygen to blood tissue […]

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