ANATOMY

Detailed explanation-1: -The digestive process starts in your mouth when you chew. Your salivary glands make saliva, a digestive juice, which moistens food so it moves more easily through your esophagus into your stomach. Saliva also has an enzyme that begins to break down starches in your food.

Detailed explanation-2: -saliva, a thick, colourless, opalescent fluid that is constantly present in the mouth of humans and other vertebrates. It is composed of water, mucus, proteins, mineral salts, and amylase. As saliva circulates in the mouth cavity it picks up food debris, bacterial cells, and white blood cells.

Detailed explanation-3: -Digestion begins immediately in the oral cavity with both mechanical and chemical digestion. Mechanical digestion in the oral cavity consists of grinding of food into smaller pieces by the teeth, a process called mastication.

Detailed explanation-4: -Additionally, saliva contains several important enzymes such as amylase, lysozyme, and lipase, and therefore, the process of digestion starts the moment food enters the mouth [4].

Detailed explanation-5: -Saliva is important because it: Keeps your mouth moist and comfortable. Helps you chew, taste, and swallow. Fights germs in your mouth and prevents bad breath.