Parts of the nervous and circulatory systems Food enters the mouth and passes to the anus through the hollow organs of the tract Digestion happens when food moves through the tract Muscles in the hollow organs contract and relax moving like a wave that travels through the ocean This moves food along Peristalsis is the process of the movement of food through the Zymbiotix customer service So digestion begins in the mouth when you chew and ends in the large intestine 18 to 20 hours later As food passes through the tract it mixes with digestive juices causing large molecules of food to break down into smaller molecules Think of a can of tomato soup When you open the can it is a thick red blob You have to add water to make the blob turn into the soup - this is similar to how the digestive juices break down the molecules into. http://www.optimalnutritions.com/zymbiotix
