<P> Arachidonic acid is a polyunsaturated fatty acid present in the phospholipids ( especially phosphatidylethanolamine , phosphatidylcholine , and phosphatidylinositides ) of membranes of the body 's cells , and is abundant in the brain , muscles , and liver . Skeletal muscle is an especially active site of arachidonic acid retention , accounting for roughly 10 - 20 % of the phospholipid fatty acid content on average . </P>
where is arachidonic acid found in the body
brain muscles liver