The small intestine, or small bowel, is a long tube where food coming from the stomach pass through. This is where most of the food particles are broken down or digested and nutrients are absorbed to be used by the body. It is divided into several portions namely: the duodenum (firs part), jejunum, and ileum (last portion).
The large intestine is the tube where feces or stool is found. It contains the undigested food and some fluids. The large intestine has four main regions. They are the cecum, colon, rectum, and anal canal. Major functions of the large intestine include:
Production of some B vitamins and vitamin K, which is produced by good bacteria normally living in the large intestine.
Absorption of some water, vitamins, and salts or ions.
Bowel movement: What remains after “absorption” is stool, which passes from the colon into the rectum and out of the anus.