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.
Saliva contains the amylase enzymes that help to break down chemically of carbohydrates in the food. Teeth help physical breakdown of the food into smaller pieces by tearing and chewing it that aids further digestion.The jaw and tongue movement assist chewing and swallowing of the food.uman digestion begins in the mouth where food is chewed and masticated. When food is dropping in the mouth, the tongue helps to move it around and the saliva coats, stick-together and lubricates the food for easier chewing and swallowing.