Family Guy - Season 12 Episode 3 - Brian's Death - Duration: 2:44. GamesAddict2010 1,331,537 views
Breaking Down Digestion. The digestion process is a combination of chemical and mechanical digestion. Chemical digestion breaks down food via a chemical change, in which the digestive juices and enzymes break down food into components small enough to enter the GI tract, the blood cells or the lymph cells.
First, food enters the mouth and is broken down through both mechanical and chemical digestive pathways. Mechanically, it is cut down by the grinding and crushing action of the teeth in the mouth, while chemically food is broken down by the enzyme salivary amylase, secreted in saliva.