NEET PG DENTAL EXAM

Detailed explanation-1: -However, three features of the mucosa and submucosa are unique. These features, which increase the absorptive surface area of the small intestine more than 600-fold, include circular folds, villi, and microvilli.

Detailed explanation-2: -The small intestine has three parts: the duodenum, jejunum, and ileum. It helps to further digest food coming from the stomach. It absorbs nutrients (vitamins, minerals, carbohydrates, fats, proteins) and water from food so they can be used by the body.

Detailed explanation-3: -Mucosa. The walls of the small intestine are lined with a dense mucosa with many glands that both secrete and absorb. In the jejunum and the ileum, the mucosa secretes small amounts of digestive enzymes and lubricating mucus while absorbing nutrients from your food.

Detailed explanation-4: -The villi number about 10 to 40 per square millimetre (6, 000 to 25, 000 per square inch) of tissue. They are most prevalent at the beginning of the small intestine and diminish in number toward the end of the tract.