Question

They are about twice the size of red blood cells and turn into a macrophage when they migrate out of the blood into the tissues.

A. Lymphocytes
B. Neutrophils
C. Monocytes
D. Eosinophils

Answer 1

C. Monocytes

Step-by-step explanation:

Monocytes are 10-24 micrometer in diameter as compared to red blood cells which are only 7-8 micrometer in diameter. Monocytes are one of the agranular leukocytes and transform into macrophages when they migrate from blood to tissues. Their function is to kill the pathogens and cellular debris by the process of phagocytosis.