Small Intestine Parts and Function
The small intestine is a part of the digestive system. The small intestine is located between the stomach and the large intestine. It is a long, coiled tube measuring about 20 feet in length in adults. Its main function is to further digest food from the stomach and absorb nutrients, including carbohydrates, proteins, fats, vitamins, and minerals, into the bloodstream for distribution throughout the body.
The small digestive tract is comprised of three parts or segments: the duodenum, the jejunum, and the ileum. On its proximal (close) end, the small digestive tract — starting with the duodenum — is associated with the stomach. On its distal (far) end, the ileum — the last portion of the small digestive system — is associated with the internal organ (colon). The jejunum lies between the duodenum and the ileum.
Now let’s see each part in detail.
Small Intestine
The small intestine is a part of the digestive system. Studying the small intestine parts and functions is crucial for understanding the process of digestion and absorption of nutrients in the digestive system. In this article, we will discuss the small intestine’s location, function, and parts in detail.
Table of Content
- Small Intestine Parts and Function
- Parts of Small Intestine
- Duodenum
- Jejunum
- Ileum
- Functions of Small Intestine
- Protein Absorption
- Lipid Absorption
- Carbohydrate Absorption
- Absorption Mechanisms
- Layers of Small Intestine
- Mucosa
- Submucosa
- Muscularis Mucosa
- Serosa