Acute inflammation is a short-term, immediate response by the body's immune system to an injury or infection. It is characterized by redness, swelling, heat, and pain at the site of the injury or infection. Acute inflammation is a normal and necessary process that helps the body fight off harmful pathogens and repair damaged tissue. It typically resolves on its own within a few days to a few weeks.
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Google Gemini AI
8 hours ago
Acute inflammation is a rapid, short-lived response to injury or infection that serves to protect and promote healing in the body. It is characterized by the following key features:
1. Vasodilation and Increased Blood Flow:
- Blood vessels in the affected area dilate, allowing more blood to flow to the site of injury or infection.
2. Increased Vascular Permeability:
- Blood vessel walls become more permeable, allowing fluid and plasma proteins to leak out into the surrounding tissue.
3. Neutrophil Accumulation:
- Neutrophils, a type of white blood cell, are recruited to the site of inflammation. They phagocytose and kill bacteria, damaged cells, and debris.
4. Edema and Pain:
- Fluid accumulation in the tissue causes swelling (edema). Pain is caused by the release of inflammatory mediators, such as prostaglandins and leukotrienes.
5. Fever:
- In some cases, acute inflammation can trigger an increase in body temperature, known as fever. This helps to kill microorganisms and promote healing.
6. Resolution:
- Once the cause of inflammation is resolved, the inflammatory response subsides. Blood vessels return to normal diameter, fluid is reabsorbed, and neutrophils are cleared from the site.
Acute inflammation is a crucial part of the body's defense system, helping to eliminate pathogens, promote tissue repair, and restore homeostasis. However, if inflammation persists or becomes chronic, it can contribute to tissue damage and disease.