The document summarizes the human digestion process in three phases: 1) The cephalic phase prepares the body for eating through saliva production and stomach distention. 2) The gastric phase lasts 3-4 hours where the stomach breaks down food using gastric acid and enzymes. 3) The intestinal phase has two parts where partially digested food triggers hormone release and most digestion occurs in the small intestine before entering the large intestine.

1. Human digestion process