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L2, red blood cells and hemoglobin, physiology

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 L2, red blood cells and hemoglobin, physiology




MCQ

1  the polypeptide chains in the globin part of normal adult Hb consist of:

a. 2 alpha and 2 beta chains.

b. 2 alpha and 2 gamma chains.

c. 2 beta and 2 gamma chains.

d. 2 beta and 2 delta chains.

____________________________

-٢ The main site of production of erythropoietin is the :

a. Liver.

b. Bone marrow.

c. Spleen

d. Reticuloendothelial system.

e. kidneys

____________________________

-3Red blood cells °RBCs":

a. The average number is 5.4 mil /mm². 

b. Have an average life span of about 12 days.

c. The average number is 4.8 mill/mmº in males.

d. Non of the above.

e. All of the above.

______________________________

-4Red blood cells "RBCs":

a. about 7.2pm in thicknesses

b. 2.2 pm diameter.

 c. The average volume of 90p3.

d. All of the above.

e. Non of the above.

______________________________

-5 Erythropoiesis in adult individuals occurs normally in the :

a. Liver.

b. Red bone marrow.

c. Yellow bone marrow,

d. Spleen.

e. Kidneys


True or False

  1. 1-RBCs in infant is lower than adult male ()

  1. 2-In old ( senile ) , metabolic system of old RBCs become less active with increased ATP production (.)

  2. 3-Erthryopiotein hermone increase RBCs formation () 

  3. 4-Iron and copelt are the most important nutritional factor() 

    5-Fetal hemoglobin has 2 alpha , 2 beta chain (. ) 

    6-RBC’s play an important role in blood viscosity. (. )


    7-Hb acts as an acid-base buffer.(. )


Answer

1-a

2-e

3-d

4-e

5-b 

True or false 

1-false

2-false

3-true

4-false 

-5 false

6-True

 7-True



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