For example, if we ingest ingest a lot of food that contains lots of protein then the stomach will store that food for hours to basically ensure that the food is broken down into smaller components and all the protein is broken down into smaller polypeptides. Now, after our food is broken down into the smaller components and after protein is broken down into smaller polypeptides that food exits the stomach and enters our small intestine and will focus on the small intestine in the next lecture. Now, within our stomach we do not have a lot of absorption taking place so none of the nutrients, the protein, the carbohydrates and a lipids are actually absorbed in our stomach. What is absorbed are molecules such as caffeine, alcohol and aspirin and other molecules. Now, if we examine the walls of our stomach the walls of the stomach contain a lining that contains millions of exocrine glands and two types of exocrine glands found in the stomach lining are gastric glands as well as pylori glands. Now, an exocrine gland is a gland that produces a molecule or a substance and releases that directly into a duct that empties out into our cavity into the lumen in this case, the cavity or the lumen of our stomach.