Question

Which of these are granulocytes?

• A. Neutrophils, basophils, lymphocytes
• B. Eosinophils, basophils, monocytes
• C. Basophils, monocytes, lymphocytes
• D. Neutrophils, eosinophils, basophils

Answer 1

The correct option is D Neutrophils, eosinophils, basophils

WBCs (White blood cells) can be granulocytes or agranulocytes.

Granulocytes are of three types:

• Eosinophils: These cells play important role in immunity and allergic reactions. These make about 1 - 5% of total leucocytes.
• Basophils: These cells contain heparin, serotonin and histamine. These make about 0.5 - 2.7% of total leucocytes.
• Neutrophils: These cells perform phagocytosis and also destroy bacteria. These make about 60 - 70% of total leucocytes.

Agranulocytes are of two types:

• Lymphocytes: These cells are of two types, B lymphocytes that maintain humoral immunity and T lymphocytes which maintain cell mediated immunity. These make about 20 - 40% of total leucocytes.
• Monocytes: These cells are actively motile and phagocytic cells. These make about 2 - 7% of total leucocytes.

So, the correct answer is 'Neutrophils, eosinophils, basophils'.