Question

Migration of leucocytes through the walls of capillaries is called _______

• A. diapedesis
• B. phagocytosis
• C. leukopenia
• D. thrombocytopenia

Answer 1

The correct option is A

diapedesis

Diapedesis is a property exhibited by leucocytes or WBC. 'Dia' means 'across' and 'pedesis' means 'oozing out'. WBCs are amoeboid in shape. They have pseudopodia which they use for locomotion. Using pseudopodia, they can squeeze themselves out of the capillary walls into the tissues or other sites of action. This movement is called diapedesis.