The Most Active Phagocytic Cells in Circulating Blood Are

Question

The most active phagocytic cells in circulating blood are
A) neutrophils and monocytes.
B) neutrophils and eosinophils.
C) monocytes and macrophages.
D) lymphocytes and monocytes.
E) mast cells and plasma cells.

Accepted Answer

Neutrophils and monocytes are the most active phagocytic cells in circulating blood. Neutrophils are the first cells to arrive at the site of infection or inflammation and they engulf and destroy bacteria, while monocytes differentiate into macrophages and continue to phagocytize pathogens.