Midgut

Midgut
Midgut
Illu small intestine.jpg
The midgut and hindgut.
Latin mesenteron
Carnegie stage 10
Precursor Mesenchyme
Code TE E5.4.7.0.0.0.2

The midgut is the portion of the embryo from which most of the intestines develop. After it bends around the superior mesenteric artery, it is called the "midgut loop". It comprises the portion of the alimentary canal from the end of the foregut at the opening of the bile duct to the hindgut, about two-thirds of the way through the transverse colon.

Contents

Structures in the adult midgut

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

v · d · ePrenatal development/Mammalian development of digestive system, coelom and septa, and mesenchymal mesenteric masses (GA 11.1101, TE E5.4, 5.8-9)
Gut
Upper GI tract and accessory
Abdominopelvic
Other
Intra-embryonic coelom · Extra-embryonic coelom

M: DIG

anat(t, g, p)/phys/devp/enzy

noco/cong/tumr, sysi/epon

proc, drug(A2A/2B/3/4/5/6/7/14/16), blte

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Look at other dictionaries:

  • Midgut — Mid gut , n. [Mid, a. + gut.] (Anat.) The middle part of the alimentary canal from the stomach, or entrance of the bile duct, to, or including, the large intestine. [1913 Webster] …   The Collaborative International Dictionary of English

  • midgut — [mid′gut΄] n. 1. the middle part of the alimentary canal in vertebrate embryos 2. the endoderm lined portion of the digestive tract of arthropods …   English World dictionary

  • midgut — See: mesenteron [Martin, 2005]. See: mesenteron [McLaughlin, 1980]. (Order Cladocera): Elongate section of digestive tract between esophagus and hindgut. Occasionally one may distinguish between a more expanded stomach region anteriorly and a… …   Crustacea glossary

  • midgut — /ˈmɪdgʌt/ (say midgut) noun the middle part of the alimentary canal …  

  • midgut cecum — (Order Amphipoda): One of several tubular outpocketings of digestive tract. According to position, one may distinguish: (1) two pairs of posteriorly directed lateral ceca (two dorsal and two ventral) arising at stomach/midgut border and extending …   Crustacea glossary

  • midgut diverticulum — (Order Cladocera): Digestive cecum [Stachowitsch, 1992]. (Order Notostraca): Cecum [Stachowitsch, 1992]. (Order Anostraca): One of two short outpocketings of midgut. Located in head and opening into digestive tract posterior to esophagus/midgut… …   Crustacea glossary

  • midgut glands — Paired glandular or storage organs of decapod crustaceans; digestive juices from midgut glands flow via tubules into the caudal (midgut) portion of the posterior chamber. Often called fat, liver, or tomally. (Syn. hepatopancreas or digestive… …   Crustacea glossary

  • midgut loop — a U shaped loop of intestine that temporarily forms during the period of rapid elongation and rotation of the midgut in embryonic development. It projects into the proximal part of the umbilical cord, to which it is attached via the yolk stalk;… …   Medical dictionary

  • midgut volvulus — volvulus neonatorum involving the entire part of the intestines derived from the midgut …   Medical dictionary

  • midgut — noun Date: 1875 the middle part of an alimentary canal …   New Collegiate Dictionary

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