Which cell type is notably absent in chronic inflammation?

• A. Monocytes
• B. Macrophages
• C. Neutrophils
• D. Lymphocytes

Answer: (C)

In chronic inflammation, neutrophils are notably absent because this type of inflammation is characterized by a different cellular response than that seen in acute inflammation.

Acute inflammation typically features a prominent presence of neutrophils, which are the body's first responders to inflammatory stimuli such as infection or injury. They play a crucial role in quickly addressing acute inflammatory processes, including the destruction of pathogens and the facilitation of tissue healing.

In contrast, chronic inflammation is marked by a persisting stimulus that leads to a prolonged inflammatory response, often associated with other immune cells such as macrophages and lymphocytes. Macrophages, which derive from monocytes, are central to chronic inflammation as they develop from infiltrating monocytes and are involved in tissue repair, phagocytosis of debris, and the orchestration of the immune response. Lymphocytes are also significant in chronic inflammation, as they are involved in the adaptive immune response and can contribute to ongoing inflammation through the production of cytokines and antibodies.

Therefore, while neutrophils are prevalent during acute inflammation, their numbers diminish in chronic inflammation, allowing other types of immune cells to dominate the inflammatory process.