The Most Active Phagocytic Cells Among the Leukocytes Are

Question

The most active phagocytic cells among the leukocytes are
A) basophils and eosinophils.
B) neutrophils and monocytes.
C) lymphocytes and neutrophils.
D) monocytes and lymphocytes.

Accepted Answer

Neutrophils and monocytes are the most active phagocytic cells among the leukocytes. Neutrophils are the first to arrive at the site of infection and engulf and destroy invading pathogens. Monocytes are larger and can differentiate into macrophages, which also engulf and destroy pathogens. Basophils and eosinophils are involved in allergic responses and the defense against parasites, but are not primarily phagocytic cells. Lymphocytes are involved in adaptive immune responses, but do not have significant phagocytic activity.