Inflammatory Response

When an injury, such as a cut or graze, happens pathogens and other foreign material are able to enter the body. This triggers a non-specific inflammatory response.The inflammatory response helps destroy the pathogens and foreign material.

Inflammatory ResponseWhat is it?

STEP 1

The damaged tissue triggers mast cells to release histamine from their histamine granules into the surrounding tissue.The histamine causes the arterioles to dilate. This increases blood flow to the infected site, making the area appear red.

STEP 2

The histamine also cause the cells in the cell walls of the capillaries to separate slightly, increasing the permeability of them. This causes plasma fluid containing white blood cells and antibodies to leak through the vessels causing swelling (Oedema)

STEP 3

In damaged or infected tissue, activated proteins called complement proteins and other chemicals attract phagocyctes to the area.The phagocytes engulf and digest dead cells and bacteria

STEP 4

Histamine and complementary signalling stop, and phagocytes are no longer attracted to the area. The tissue returns to normal.

Inflammatory Response

Step 1

Step 2

Step 3

step 4