Midgut 4639041 208398394 2008-04-26T21:32:24Z 144.82.204.36 /* Clinical notes */ {{Infobox Embryology | Name = {{PAGENAME}} | Latin = | GraySubject = | GrayPage = | Image = Illu small intestine.jpg| Caption = The midgut and hindgut.| Image2 = | Caption2 = | System = | CarnegieStage = 10 | Precursor = [[Mesenchyme]] | GivesRiseTo = | MeshName = | MeshNumber = | DorlandsPre = m_16 | DorlandsSuf = 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. ==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== * [[Foregut]] * [[Hindgut]] ==External links== * {{EmbryologyUNC|digest|020}} * {{eMedicine|radio|450}} - "Midgut Volvulus" * {{Chorus|00494}} * [http://www.med.umich.edu/lrc/coursepages/M1/embryology/embryo/10digestivesystem.htm Umich.edu - development] {{digestive-stub}} {{developmental-biology-stub}} {{Development of digestive system}}[[Category:Embryology]] [[de:Mitteldarm]]