Cell membranes contain important mechanisms for starting inflammatory responses.After a stimulus has evoked an initial response, activation of arachidonic acid(A.A.) leads to stimulation of cyclo-oxygenase (COX)
Arachidonic acid mediates the production of prostaglandins as well as leukotrienes.
Extra info: Although not shown in the graphic, arachidonic acids are precursors for both prostaglandins and leukotrienes.
Leukotrienes are pro-inflammatory.
Extra info: These substances are important factors for the maintenance of the late inflammatory reactions.