Why?
The human digestive tract is very important. The human digestive tract gets all of the nutrients from the things that you eat and drink. You need nutrients because it will make your body better. Calcium makes your bones stronger. Protein makes your muscles stronger. Your digestive tract is full of more than just your stomach. The digestive tract includes your mouth, esophagus, stomach, small intestine, large intestine, pancreas, liver, ect. So, there are a lot of things in the digestive tract. Something's in your digestive tract don’t even digest food. Your esophagus is one of things that doesn't digest your food. The esophagus helps you swallow food. There are even things that you probably didn’t think digest food. For instance your mouth digests the food particle starches which is a carbohydrate.