Question

Number of leucocytes present in one $m{m}^3$ of blood is

• A. 5000-8000
• B. 2000-3000
• C. 8000-13000
• D. 1 million to 1.5 million

Answer 1

The correct option is A 5000-8000

Leucocytes or white blood cells (WBCs) are colourless, nucleated and motile cells of blood.. Their normal count is 5000- 8000 cells per mm³ of blood. WBCs (White blood cells) can be granulocytes or agranulocytes.depending upon whether they have granules or not. Granular leucocytes or granulocytes are acidophils, basophils and neutrophils while agranular leucocytes or agranulocytes are lymphocytes and monocytes. All WBCs are capable of amoeboid movement with the help of which they are squeezed out of capillaries into the tissues.

So, the correct answer is '5000 - 8000'.