This MedLibrary.org supplementary page on Midgut is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
| Midgut | ||
|---|---|---|
 |
||
| The midgut and hindgut. | ||
| Carnegie stage | 10 | |
| Precursor | Mesenchyme | |
| Dorlands/Elsevier | m_16/12535859 | |
The midgut is the portion of the embryo from which most of the intestines are derived. After it bends around the superior mesenteric artery, it is called the "midgut loop". It originates from the foregut at the opening of the bile duct into the duodenum and continues through the small intestine and much of the large intestine until the transition to the hindgut about two-thirds of the way through the transverse colon.
Contents |
Structures in the adult midgut
- Duodenum (3rd and 4th parts)
- Jejunum
- Ileum
- Cecum
- Appendix
- Ascending colon
- Hepatic flexure of colon.
- Transverse colon (proximal two-thirds)
Vascular, lymphatics and innervation
Arterial supply to the midgut is from the superior mesenteric artery, an unpaired branch of the aorta. Venous drainage is to the portal venous system. Lymph from the midgut drains to prevertebral superior mesenteric nodes located at the origin of the superior mesenteric artery from the aorta. Portal drainage carries all non-lipid nutrients from digestion to the liver for processing and detoxification, while lymphatic drainage carries fatty chyle to the cisterna chyli. Autonomic innervation of the midgut is from the superior mesenteric plexus.
Clinical notes
- Malrotation of the midgut during development can lead to volvulus.
- Pain in the midgut is referred to the umbilical region (around the umbilicus (belly button)).
See also
External links
- digest-020 — Embryology at UNC
- radio/450 at eMedicine - "Midgut Volvulus"
- 00494 at CHORUS
- Umich.edu - development
 |
This digestive system article is a stub. You can help Wikipedia by expanding it. |
 |
This developmental biology article is a stub. You can help Wikipedia by expanding it. |
|
|||||||||||
Wikipedia content modification information:
- This page was last modified on 26 April 2008, at 21:32.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Midgut".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.