AP PSYCHOLOGY

Detailed explanation-1: -The digestion of food begins in mouth itself by the action of salivary amylase or ptyalin present in saliva.

Detailed explanation-2: -Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules. Digestion of food starts in the mouth. Saliva initiates digestion by converting starch into a simpler form.

Detailed explanation-3: -Digestion begins in the mouth, well before food reaches the stomach. When we see, smell, taste, or even imagine a tasty meal, our salivary glands in front of the ear, under the tongue, and near the lower jaw begin making saliva (spit). As the teeth tear and chop the food, spit moistens it for easy swallowing.

Detailed explanation-4: -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-5: -The digestion of starch takes place in the mouth. The saliva secreted in the mouth breaks down the starch into sugars. Hence, the digestion of starch doesn’t start in the stomach.