
The abnormal increase in the total RBC count in cubic millimeter is referred to as
A. Pneumonia
B. Polycythemia
C. Leucopenia
D. Anemia
Answer
485.4k+ views
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.
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.
Recently Updated Pages
What percentage of the area in India is covered by class 10 social science CBSE

The area of a 6m wide road outside a garden in all class 10 maths CBSE

What is the electric flux through a cube of side 1 class 10 physics CBSE

If one root of x2 x k 0 maybe the square of the other class 10 maths CBSE

The radius and height of a cylinder are in the ratio class 10 maths CBSE

An almirah is sold for 5400 Rs after allowing a discount class 10 maths CBSE

Trending doubts
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths

Why is there a time difference of about 5 hours between class 10 social science CBSE

Change the following sentences into negative and interrogative class 10 english CBSE

What constitutes the central nervous system How are class 10 biology CBSE

Write a letter to the principal requesting him to grant class 10 english CBSE

Explain the Treaty of Vienna of 1815 class 10 social science CBSE
