Function of the Digestive System
The function is turning the food you eat into energy and the remnants are packaged for waste disposal. The mouth is part of the digestive system for chewing the food. Next is the esophagus, which moves food from your mouth to your stomach. Then there is the small intestine which breaks down the food using enzymes released by the pancreas and bile from the liver. The gallbladder stores and concentrates bile and releases it. The large intestine, also known as the colon, is the tube that connects the small intestine to the rectum. The large intestine is responsible for processing waste so emptying the bowels is easier. The rectum receives stool from the colon, to let the person know there is stool that needs to be evacuated, and to hold the stool until evacuation happens. The anus is the last part of the digestive system, it is the part that releases the waste.
Why the digestive of large food molecules is essential:
There are many reasons why this is essential. Firstly, the foods we eat are made up of many compounds made by other organisms which are not suitable for all human tissues which is why they have to be broken down so our bodies can use them. Secondly, the food molecules have to be small enough to be absorbed by the villi in the intestine through diffusion, facilitated diffusion or active transport. The food molecules need to be small enough to be broken down to be absorbed better.