Jejunum

In anatomy of the digestive system, the jejunum is the central of the three divisions of the small intestine and lies between the duodenum and the ileum. In adult humans, it is usually between 2-8m (06' 07"-26' 03") long. The pH in the jejunum is usually between 7 and 8 (neutral or slightly alkaline). The jejunum and the ileum are suspended by mesentery which gives the bowel great mobility within the abdomen.

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The inner surface of the jejunum, its mucous membrane, is covered in projections called villi, which increase the surface area of tissue available to absorb nutrients from the gut contents. It differs from the duodenum due to lack of Brunner's glands. It is also different from the ileum due to less goblet cells and generally lacks Peyer's patches.

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Jejunum is derived from the adjective jejune, which means "fasting" or "hungry" in Early Modern English.

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Anatomy: :There is a historical type of English poetry called an anatomy, or more precisely an amatory anatomy. It is a love sonnet dedicated to describing the parts of a lover's anatomy (usually female lover's)....

Digestive system: REDIRECT Digestion...

Small intestine: In biology the small intestine is the part of the gastrointestinal tract between the stomach and the large intestine (colon). In humans over 5 years old it is about 7m long. It is divided into three structural parts: duodenum, jejunum and ileum. Food from the stomach is allowed in to the duodenum b...