Title: Small Intestine - Function, Anatomy, Location, Length and Diagram
Headings: Small Intestine
Small Intestine
Small Intestine Definition
Where is the Small Intestine located?
Small Intestine Location and Anatomy
Parts of the Small Intestine
How long is the small intestine?
Structure of the Small Intestine
Structure of Duodenum
Structure of the jejunum
Structure of the ileum
Small Intestine Histology
Mucosa layer
Submucosa layer
Muscularis Externa
Serosa layer
Small Intestine Functions
Role in Digestion
Role in Absorption
Immunological Role
Innervations of the Small Intestine
Small Intestine Pictures
Clinical Significance of Small Intestine
Physical obstructive disorders
Infectious diseases
Bacterial infections
Viral infections
Neoplastic disorders
Genetic disorders
FAQs
What is malabsorption?
What is gastroesophageal reflux?
What do you mean by celiac disease?
What is endoscopy?
About Anirudh Agarwal

Content: The inner mucosa membrane of the ileum is also folded into finger-like projections called villi. The radial and the longitudinal muscles help in the movement of the food along the intestinal tract through peristalsis. The ileum terminates at the ileocecal valve, the separation between ileum and caecum. There are numerous lymphatic patches distributed in the ileum and known as Peyer’s patches. These are areas where no villi are present. Small Intestine Histology
There are four layers of the small intestinal wall, each different in the three parts of the intestine. The four layers are: Mucosa
Submucosa
Muscularis Externa
Serosa
Mucosa layer
The mucosa is the innermost layer surrounding the lumen of the small intestine. It is secretory, protective and absorptive in nature. The mucosa is further divided into three sublayers: