Question

choose the correct answer of tge following questions and explain why the other choises are incorrect

1- the mean cell volume (MCV) is measured as 73 fL and the mean cell hemoglobin concentration (MCHC) is 30 g/dL. What, in general terms, must be true of the mean cell hemoglobin (MCH) if it is consistent with the above two indices?

a. it is not possible to predict from the information provided.

b. it should be within the normal reference range

c. it should be below the reference range

d. it sould be above the reference range

2- an increased MCV could be expected with wich of the following?

a- increased Hb

b- decrease Hct

c- increased reticulocyte count

d- decreased ERS

3- which of the following may cause an erroneously elevated MCHC?

a. elevated WBC

b. anemia

c. lipemia

d. inflammation

e. A and C

f. A, B and C

g. all of the above

which of these bone marrow cells can differentiate into both myeloid and erythroid cells?

a. BFU-E

b. CFU-GM

c. CFU-GEMM

d. Dendritic cell

which of the following growth factor(s) stimulate(s) only one lineage of cells?

a. kit ligand

b. GM-CSF

c. IL-6

d. EPO

e. A and C

f. B and D

Answer 1

1)C)

MCV X MCHC = MCV
Both MCV and MCHC has its value below the reference range so, net result will also be lower than the reference range

2)C)
Reticulocyte volume is more than normal RBC. So MCV aslo increases. If Hct decreases, MCV decreases and other two has no relation with MCV

3)B)

In case of microcytic anaemia MCHC may increase whereas for other cases not sure

4)C)

It's the progenitor for granulocyte, erythrocytes,monocyte, megakaryocytes