Final answer:
Phagocytes are immune cells named for their ability to 'eat' or engulf pathogens through a process known as phagocytosis. They are pivotal in the innate immune response and consist of cells such as macrophages and neutrophils, which also contribute to inflammation and the overall immune defense.
Step-by-step explanation:
The term phagocytes refers to the first defensive cells that arrive at the site of infection or injury and their name literally means "to eat." These cells are a crucial component of the innate immune system and are specialized in engaging in phagocytosis, which is the process of engulfing and digesting pathogens and debris. Phagocytes, like macrophages and neutrophils, are essential for the body's rapid response to infection. Macrophages are versatile phagocytes that also act as antigen-presenting cells, activating the adaptive immune system, while neutrophils are the most abundant leukocytes and are quickly mobilized to the site of infection. Both cell types play significant roles in inflammation, as they release pro-inflammatory cytokines that amplify the immune response and contribute to the elimination of pathogens.