The<unk>  is one of the nine regions of the abdomen, along with the right and left hypochondria, right and left lateral regions (lumbar areas or flanks), right and left inguinal regions (or fossae), and the umbilical and pubic regions. It is located between the costal margins and the subcostal plane. During breathing, the diaphragm contracts and flattens, displacing the viscera and producing an outward movement of the upper abdominal wall (epigastric region). It is a convergence of the diaphragm and the abdominals, so that "when both sets of muscles (diaphragm and abdominals) tense, the<unk>  pushes forward". Therefore, the epigastric region is not a muscle nor is it an organ, but it is a zone of activity where the actions of the rectus abdominis and the diaphragm produce an outward bulging of the upper abdominal wall. Contents The<unk>  lies over a number of structures in the abdomen. Part of the liver lies in the right of the<unk> . It also lies over the duodenum, the edge of the spleen, part of the stomach, and part of the pancreas.
Epigastrium
Gumma 
Diaphragm 
Esophagus
Palatine tonsil
Salve
Subclavian loop
Tenesmus