how does food go through the digestive system? the process of the digestive system and the part auxiliary organs play?

Food moves through the digestive system via a process
known as peristalsis. Involuntary muscles create a wavelike movement and food is passed
along the alimentary canal from one organ to the next by these muscle contractions. In
the mouth, saliva has the enzyme ptyalin which acts on starches. In the esophagus, the
saliva continues to act on starch. The stomach has gastric juice with proteases which
begin the chemical digestion of starch, in an acidic environment. In the small
intestine, proteases, lipases and carbohydrate enzymes complete the chemical digestion
of food in an alkaline environment,  which is then absorbed through the tiny villi
projecting from the small intestinal lining. Wastes and undigested materials go to the
large intestine, where they are eliminated through the anus. Water is reabsorbed through
the large intestinal lining. Accessory organs are the pancreas, which makes digestive
enzymes for all food groups and the liver which makes bile, to emulsify
fats.