The abnormal increase in the total RBC count in cubic millimeter is referred to as A. Pneumonia B. Polycythemia C. Leucopenia D. Anemia
Hint: RBC is an important cellular part of blood. It carries haemoglobin which transports oxygen in the required areas. A proper total count of RBC indicates good health as an increase or decrease of this component is associated with diseases.
Complete answer: In Mammals, blood contains red blood cells (RBC) or erythrocytes, white blood cells (WBC) or leukocytes, and platelets. Erythrocytes are biconcave cells that do not contain a nucleus i.e. it is an enucleated cell. Rather it contains the iron-containing haemoglobin protein which helps to transport oxygen.
The total count (TC) of RBC can be obtained by using a haemocytometer and a good microscope. Nowadays, other efficient techniques and technologies are used to get more accurate counts. In a normal healthy man, TC of RBC ranges from 4.7 to 6 million cells/mL; in females, it is 4.2 to 5.5 million cells/mL. If the count increases, it indicates polycythemia.
So, the correct option is B. Polycythemia
Note: A decrease in the RBC count indicates erythrocytopenia. The other options are not related to TC or RBC. Pneumonia is a type of lung infection, leukopenia indicates decreased WBC and anemia is the lack of good healthy RBCs.