The food is masticated by teeth and tongue in the buccal cavity with the help of saliva. Masticated food is swallowed with the help of buccal cavity. This masticated food (in the form of bolus) is pushed into pharynx and then into the food pipe. Food pipe transfers the food into cardiac part of stomach. In stomach food is stored for 4-5 hours. Some of the digestive processes takes place in the stomach. Stomach is the main site of protein digestion