In the stomach, the second step of the digestive process begins. When the chewed food reaches the bottom of the esophagus, a valve lets the food enter the stomach. Contraction of the stomach wall mixes the food. Acidic gastric juices, which are secreted by the gastric glands in the stomach,helping in mixing the food and in turning it into a partial liquid so it well have the ability to move into the small intestine. In the small intestine, enzymes are secreted, and digestion is completed.