Jatharagni - It performs digestion of food and considered to govern other Agnis, Jatharagni is active in the stomach and gastrointestinal tract. It helps to assimilate the food, according to our body needs. It digests food and separates the nutrient factor from the residue factor. It correlated with the other agnis. Central Digestive Fire This is located from the mouth to the anus and is present throughout the gastro-intestinal tract. Its main function is to help digest complex foods to a simple form known as ‘ahara rasa’, the food essence. http://whatreallyworks.co.uk/start/AyurvedicZone.asp?article_ID=875