Intestinal glands are specialized structures located in the lining of the small intestine and large intestine. They are responsible for producing digestive enzymes and mucus, which aid in the breakdown of food and protect the intestinal lining. These glands help facilitate nutrient absorption and maintain a healthy gut environment. There are two main types of intestinal glands: crypts of Lieberkühn in the small intestine and Brunner's glands in the duodenum. The crypts secrete enzymes and hormones, while Brunner's glands produce alkaline mucus to neutralize stomach acid. Together, these glands play a crucial role in the digestive process.