All of the following responses are seen in acute inflammation except: March 2005
**Core Concept**
Acute inflammation is a complex, highly regulated process involving the coordinated response of various cell types, chemical mediators, and physiological changes. It is characterized by the activation of immune cells, increased blood flow, and the release of pro-inflammatory mediators, ultimately leading to the elimination of the inciting stimulus.
**Why the Correct Answer is Right**
The correct answer is related to the concept of acute inflammation, which typically involves the recruitment of immune cells, increased vascular permeability, and the release of chemical mediators. This process is mediated by the activation of various cell types, including neutrophils, macrophages, and endothelial cells, as well as the release of pro-inflammatory cytokines and chemokines.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it is a hallmark of acute inflammation. Increased vascular permeability leads to the leakage of fluid and plasma proteins into the interstitial space, contributing to the characteristic signs of inflammation, including redness, swelling, and heat.
* **Option B:** This option is incorrect because it is a key feature of acute inflammation. The recruitment of neutrophils and other immune cells to the site of inflammation is a critical component of the inflammatory response.
* **Option C:** This option is incorrect because it is a characteristic of chronic inflammation. Chronic inflammation is characterized by a persistent and often destructive inflammatory response, which can lead to tissue damage and fibrosis.
**Clinical Pearl / High-Yield Fact**
Chronic inflammation is often associated with a shift from a predominantly neutrophilic to a predominantly mononuclear cell infiltrate, reflecting the activation of different immune cell types and the release of distinct cytokines and chemokines.
**Correct Answer:** D