What is the Process by which food is received into the gi tract vis mouth?

The process by which food is received into the gastrointestinal (GI) tract via the mouth is called ingestion. It begins with the mechanical breakdown of food through chewing (mastication) and is accompanied by the mixing of food with saliva, which contains enzymes that initiate digestion. The tongue then helps to form the chewed food into a bolus, which is pushed to the back of the throat for swallowing. This bolus then travels down the esophagus to enter the stomach, continuing the digestive process.