14+ Sections Of The Small Intestine Pics. Identification of tissue layers in transverse sections of the small intestine viewed with a microscope or in a micrograph and villi increase the surface area of epithelium over which absorption is carried out and villi absorb monomers formed by digestion as well as mineral ions and vitamins. The three sections of the small intestine look similar to each other at a microscopic level, but there are some important differences.
Food enters the duodenum through the pyloric sphincter in amounts that the small intestine. The small intestine (small bowel) is about 20 feet long and about an inch in diameter. The small intestine is the longest part of the digestive system.
A section of either the small or large bowel can become blocked or twisted or just stop working.
The small intestine (small in diameter compared to the large intestine) is divided into three sections, as shown in figure. Digestion (from basic stages of digestion) increase the surface area available for the absorption of nutrients. The duodenum, about 25 cm (10 in) long, receives chyme from the stomach through the pyloric sphincter. The mucous membrane of the small intestine changes during its course.