ANATOMY

Detailed explanation-1: -Mouth. 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: -Food is crushed into small pieces by the teeth. The food is then mixed with saliva and the enzyme amylase (found in saliva) breaks down starch into sugars. The tongue helps in thorough mixing of food with saliva. Food goes directly through the oesophegus to the stomach, there is no breakdown of food in mouth .

Detailed explanation-3: -The oral cavity performs mastication of food and facilitation of swallowing. The hard chewing surface of teeth helps in the breakdown of food into small pieces. The teeth and tongue along with saliva mix up the food thoroughly. Amylase enzyme present in the saliva breakdown the starch into sugars.

Detailed explanation-4: -Your mouth allows air and nutrients to enter your body, and it also helps you speak. It’s also called the oral cavity.

Detailed explanation-5: -Your tongue helps out, pushing the food around while you chew with your teeth. When you’re ready to swallow, the tongue pushes a tiny bit of mushed-up food called a bolus (say: BO-luss) toward the back of your throat and into the opening of your esophagus, the second part of the digestive tract.