Question

13.A white blood cell count may be decreased because of:

a. A chronic viral infection

b.       Exposure to toxins

C. Chemotherapy use

D- All of the above

14 – The reference or nor mil range for the platelet count is:

a.       4,300to 10,800/mm3

b.       150,000 to 450,OOO/mm3

c.        5.0 to 6.5 million/mm3

d.       12 to 14 g/dL

15.This type of white blood cell is the most numerous in a healthy adult and makes up about 60% of the white blood cells:

a.       Eosinophil

b.       Monocyte

c.        Neutrophil

d.       Lymphocyte

Answer 1

13. Answer is D. All of the above.

Along with this bone marrow disorders, some medicine like antibiotics, nutritional deficiencies, auto immune disorders like rheumatoid arthritis can also cause low WBC count.

If WBC count is low we should take measyto avoid infection

14. Answer B. 150000-450000/mm3

More than 450000/mm3 called thrombocytosis

Less than 150000/mm3 called thrombocytopenia

15. Answer is C Neutrophils

Neutrophils has important role in immune system,they will be circulating in the blood stream, and when they identify any signals of infection,they are the first cells to migrate to the area of infection to begin killing the microorganisms.

Normal range of neutrophils count is measured as 1500-8000/mm3