Final answer:
The ileum is the final part of the small intestine, responsible for absorbing vitamin B12, bile salts, and remaining nutrients.
Step-by-step explanation:
The ileum is an example of a part of the small intestine. It is the third and final part of the small intestine, directly connected at its distal end to the large intestine. The ileum absorbs vitamin B12, bile salts, and other remaining nutrients that were not absorbed in the jejunum. All undigested or unabsorbed substances in the chyme pass into the large intestine from the ileum.