Which type of leukocyte is abundant in phagocytic activity?

Neutrophils are the most abundant type of leukocytes and play a crucial role in the immune response, particularly in phagocytosis. As the first line of defense against pathogens, neutrophils are highly effective at engulfing and digesting bacteria and fungi. They respond rapidly to sites of infection and are equipped with enzymes and antimicrobial substances stored in granules, which they release during phagocytosis to destroy the engulfed microorganisms.

This ability to tirelessly seek out and eliminate foreign invaders is what classifies neutrophils as key phagocytic cells. Their lifespans are relatively short, but they proliferate quickly in response to infection, highlighting their importance during the acute inflammatory response. This characteristic makes them fundamental in maintaining the body’s defense against infection and chronic inflammation.

In contrast, other types of leukocytes such as lymphocytes are primarily involved in adaptive immunity; basophils contribute to allergic responses and inflammation; and eosinophils are primarily active against parasitic infections and also play a role in allergic reactions but are not noted for phagocytic activity like neutrophils.