Mouth Oral Cavity Fauces Oropharynx Laryngopharynx Esophagus Cardiac Sphincter Cardiac Region of Stomach Body of Stomach Pyloric Region of Stomach Pyloric Sphincter of Stomach Duodenum of Small Intestine Jejunum of Small Intestine Ileum of Small Intestine Cecum of Large Intestine Ascending Colon of Large Intestine Hepatic Flexure of Large Intestine Transverse Colon of Large Intestine Splenic Flexure of Large Intestine Descending Colon of Large Intestine Sigmoid Colon of Large Intestine Rectum of Large Intestine Anal Canal of Large Intestine Ileocecal Junction