The following points highlight the four main types of digestion. The types are: 1. Digestion in the Mouth 2. Digestion in the Stomach 3. Pancreatic Digestion 4. Digestion in Intestine. Type # 1. Digestion in the Mouth: Constituents of Saliva: a. Saliva is colourless, slightly acid (pH 6.4- 7.1) rather than alkaline, viscous fluid secreted […]