This block deals with the structural and topographic organization of the gastrointestinal tract and related accessory organs like Liver, pancreas etc, the functional organization and related mechanisms of action effective in the gastrointestinal tract and related accessory organs, understand the common dysfunctional and morbid changes of the gastrointestinal tract and related accessory organs, be aware of prevalence and preventive measures of the common gastrointestinal tract and related accessory organs and be familiar with the common clinical and laboratory methods of diagnosis and general lines of management of the common disorders of the gastrointestinal tract and related accessory organs.