How does complement help in defense against bacterial invasion?

Question

Quizplus · Accepted Answer

Complement promotes phagocytosis by opsonizing bacteria, making them more recognizable and attractive to phagocytic cells. Additionally, some complement components directly lyse bacterial cells through the formation of membrane attack complexes. While complement may also help in neutralizing toxins and preventing bacterial penetration of the skin, phagocytosis is the most direct way in which complement helps in defense against bacterial invasion. Fusing lysosomal granules to bacterial cell walls is not a function of complement.

How Does Complement Help in Defense Against Bacterial Invasion