What is the function of phagocytes in the immune system?

Phagocytes play a crucial role in the immune system primarily by fighting infections. They accomplish this by actively engulfing and digesting pathogens such as bacteria, viruses, and other foreign substances that invade the body. This process, known as phagocytosis, allows phagocytes to eliminate harmful organisms and thus help protect the body from infections.

Phagocytes, which include types such as macrophages and neutrophils, are often among the first responders to sites of infection or injury. By effectively targeting and destroying these pathogens, they help to initiate and shape the adaptive immune response, contributing to the body's overall defense mechanisms.

While other options mention important functions in the immune system, they do not accurately describe the primary role of phagocytes. For instance, transporting nutrients and producing antibodies involve different types of cells and processes within the immune system, while regulating inflammation involves mechanisms that can include various immune cell types, but does not specifically highlight the direct action of phagocytosis that characterizes phagocytes.