Which cells are primarily involved in the acute inflammatory response?

• A. Lymphocytes, Neutrophils, and Macrophages
• B. Eosinophils, Neutrophils, and Mast Cells
• C. Neutrophils, Macrophages, and Mast Cells
• D. Macrophages, Basophils, and Neutrophils

Answer: (C)

The acute inflammatory response is characterized by the immediate reaction to injury or infection, primarily involving neutrophils and macrophages. Neutrophils are the first responders to sites of inflammation and play a crucial role in the initial phase of the response by rapidly migrating to the site of infection or injury, where they help to eliminate pathogens and debris through phagocytosis and release of inflammatory mediators.

Macrophages, which can also differentiate from monocytes that migrate to the infected area, take over after neutrophils and provide a more sustained response. They play a vital role in the later phases of inflammation, continuing the clean-up process, secreting cytokines that further propagate the inflammatory response, and facilitating tissue repair.

Mast cells are also important in the inflammatory response, as they release histamine and other chemicals that contribute to vasodilation and increased vascular permeability; however, in the context of the acute phase, the primary action is attributed to neutrophils and macrophages.

Other options may include cells like basophils and eosinophils, which play roles more associated with allergic reactions and parasitic infections rather than the initial acute inflammatory response. Thus, highlighting the roles of neutrophils and macrophages in driving the initial and sustained