_____American Cancer Society cancer.org | 1.800.227.2345 The first 3 parts make up the proximal stomach: Cardia: the first part, which is closest to the esophagus Fundus: the upper part of the stomach next to the cardia Body (corpus): the main part of the stomach, between the upper and lower parts Some cells in these parts of the stomach make acid and pepsin (a digestive ….