ANATOMY

Detailed explanation-1: -Chemical digestion in the mouth is minor but consists of salivary amylase (ptyalin, or alpha-amylase) and lingual lipase, both contained in the saliva. Salivary amylase is chemically identical to pancreatic amylase and digests starch into maltose and maltotriose, working at a pH optimum of 6.7 to 7.0.

Detailed explanation-2: -Different types of enzymes target different nutrients: Amylase breaks down carbs and starches. Protease works on proteins. Lipase handles fats.

Detailed explanation-3: -The 4 main digestive enzymes are carbohydrases, proteases, lipases, and nucleases.