Section 10
The Small Intestine
Book
Version 29
By Boundless
By Boundless
Boundless Anatomy and Physiology
Physiology
by Boundless
3 concepts
Anatomy of the Small Intestine
The small intestine is the part of the gastrointestinal tract where much of the digestion and absorption of food takes place.
![Thumbnail](../../../../../../figures.boundless-cdn.com/3866/square/small-intestine-low-mag.jpeg)
Histology of the Small Intestine
The small intestine wall has four layers: the outermost serosa, muscularis, submucosa, and innermost mucosa.
![Thumbnail](../../../../../../figures.boundless-cdn.com/6734/square/major-digestive-enzymes.jpg)
Digestive Processes of the Small Intestine
The small intestine uses different enzymes and processes to digest proteins, lipids, and carbohydrates.