V Diseases of blood

36/ What is Anemia?

Anemia is a pathological condition characterized by decreased number of erythrocytes and/or hemoglobin content in a blood unit volume due to their general deficiency.

37/ What is Anemia characterized by?

Characterized by decreased number of erythrocytes and haemoglobin content in a blood unit volume due to their general deficiency.

38/ Is there any difference between quantitative and qualitative Anemia?

Anemia is often characterized not only by qualitative changes in the red blood complsition but also qualitative changes in the structure of erythrocytes and haemoglobin molecules.

39/ What factors can provoke Haemoblastosis?

Haemoblastosis can be diffuse and focae is a diseases of the whole blood system characterized by:

1) proqressive cell proliferation of certain cells

2) substitution

3) development of pathological foci of haemopoiesis in various organs

40/ What are main theories explaining the etiologg of Haemoblastosis?

There are three main theories explaining the etiology of haemoblastosis:

-virus theory: the are more then 20 viruses, that can cause haemoblastosis in animals, but attempts at isolatining the virus of haemoblastosis in main end in failure;

-genetic theory: according to it, haemoblastosis develops due to the congenital or acquired damage to the chromosome structures of low differentiated cells of the haemopoietic organs;

-clone theory: according to it, haemoblastosis arises due to primary chromosome mutation it one of the haemopoietic cells with it subsequent multiplication and formation of a clone of blood cells.