All are essential unsaturated fatty acids except
Palmitoleic acid, oleic acid, linoleic acid, linolenic acid and arachidonic acid are the five unsatured fatty acids.
Among them palmitoleic acid, oleic acid are mono unsaturated fatty acids. linoleic acid, linolenic acid and arachidonic acid are essential unsaturated fatty acids.
Arachidonic acid becomes essential, if its precursor, linoleic acid is not present in the diet. It is considered as the precursor for the synthesis of prostaglondins.
Linoleic acid
Linolenic acid
Arachidonic acid
Palmitoleic acid