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Jejunum - Anatomy & Physiology (view source)
Revision as of 08:45, 17 July 2008
, 08:45, 17 July 2008no edit summary
==Introduction==
The jejunum lies between the duodenum and ileum of the small intestine. It is the longest part of the small intestine and is highly coiled. It has digestive and absorptive functions.
==Structure==
==Structure==
[[Image:jejunumphoto.jpg|thumb|right|150px|Jejunum(Dog) - Copywright RVC 2008]]
[[Image:jejunumphoto.jpg|thumb|right|150px|Jejunum(Dog) - Copywright RVC 2008]]
*It occupies the ventral part of the abdominal cavity, filling those parts that are not occupied by other viscera. This produces species variation (see comparative aspects).
*It is highly coiled and occupies the ventral part of the abdominal cavity, filling those parts that are not occupied by other viscera. This produces species variation (see comparative aspects).
*It lies on the abdominal floor, separated from the parietal peritoneum by the greater omentum.
*It lies on the abdominal floor, separated from the parietal peritoneum by the greater omentum.
*It is suspended by the mesentry (mesojejunum). This conveys the blood vessels and nerves and houses lymph nodes.
*It is suspended by the mesentry (mesojejunum). This conveys the blood vessels and nerves and houses lymph nodes.
**The mesentry converges to its root. This is where the cranial mesenteric artery branches off from the aorta.
**The mesentry converges to its root. This is where the cranial mesenteric artery branches off from the aorta.
==Vasculature==
==Vasculature==