That would be the esophagus.
The tongue is a muscle which pushes food to the back of the mouth, where it the food is then swallowed.
Saliva helps the mouth to break down the food, but what digests the food is fiber, and stomach acid.
Tongue
The mouth chew the food first, a muscle at the back of the mouth forces the food down your gullet and the gullet's muscle forces it down into your stomach.
Down your throat in back of your mouth - AHH!
This form of digestion starts in the mouth with the salivary gland witch break down food
The mouth is the beginning of the digestive system. The saliva glands activate when you have food in your mouth, thus breaking down the food. Your teeth chew the food, helping the salivary glands with the process of breaking it down. Hope this helps!
The tongue helps move food to the back of the mouth through a series of muscular contractions, called peristalsis, which helps facilitate the swallowing process. This movement also helps mix saliva with the food to form a bolus for easier swallowing.
The mouth breaks down food by both mechanical (chewing) and chemical (enzymes in saliva) processes. This helps to physically and chemically break down food into smaller molecules that the body can absorb. Saliva also helps to moisten food and initiate the digestion process.
That would be the mouth. Hope this helps.
Your saliva breaks down the food along with your teeth and your tongue helps you swallow it.
The digestion system breaks down food. Digestion begins in the mouth and ends in the small intestine.