The small intestine carries out the final stages in digestion. It is lined with small hairs and blood vessels inside the intestine carry away nutrients to other parts of the cat's body. The small intestine has three sections: the duodenum, the jejunum, and the ileum. The duodenum is the section where the process of absorption begins. The jejunum is the largest portion of the small intestine and it is here where most of the absorption takes place. The ileum is the final section of the intestine and it is where the absorption process ends.
