BRAINCAKEInflammatory Response
Local damage or irritants cause inflammation at a wound site. Inflammation is characerised by redness and swelling.
Mast cells produce histamines and cytokines. This dilates blood vessels causing heat and redness.
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Key terms in this lesson
- phagocytosis
- The process by which a cell, such as a white blood cell, engulfs and digests a pathogen or debris.
- hydrostatic pressure
- The pressure exerted by a fluid, such as blood, that forces fluid out of the capillaries to form tissue fluid.
- pathogen
- A microorganism that causes disease.
More in Communicable Diseases
- Transmission of Pathogens Between Plants
- Plant Defences against Pathogens
- Mammals - non-Specific Defences
- Blood Clotting
- Fevers
- Phagocytosis
- Counting Blood Cells
- Cytokines
All 40 lessons in Communicable Diseases · All OCR AS-level Biology topics