RT Book, Section A1 Doherty, Gerard M. A2 Doherty, Gerard M. SR Print(0) ID 1105488710 T1 Stomach & Duodenum T2 CURRENT Diagnosis & Treatment: Surgery, 14e YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 9780071792110 LK accesssurgery.mhmedical.com/content.aspx?aid=1105488710 RD 2024/10/05 AB The stomach receives food from the esophagus and has four functions: (1) it acts as a reservoir that permits eating reasonably large quantities of food at intervals of several hours; (2) food contained in the stomach is mixed, and delivered into the duodenum in amounts regulated by its chemical nature and texture; (3) the first stages of protein and carbohydrate digestion are carried out in the stomach; and (4) a few substances are absorbed across the gastric mucosa.