Midgut

Midgut
The midgut and hindgut.
Details
Carnegie stage	10
Precursor	Mesenchyme
Identifiers
Latin	mesenteron
TE	E5.4.7.0.0.0.2
FMA	45617
Anatomical terminology [edit on Wikidata]

The midgut is the portion of the human

During development, the human midgut undergoes a rapid phase of growth in which the loop of midgut herniates outside of the abdominal cavity of the fetus and protrudes into the umbilical cord. This herniation is physiological (occurs normally).

Later in development, the fetus's body catches up in size relative to the midgut and creates adequate room in the abdominal cavity for the entirety of the midgut to reside. The midgut loops slip back out of the umbilical cord and the physiological hernia ceases to exist. This change coincides with the termination of the yolk sac and the counterclockwise rotation of the two limbs of the midgut loop around their combined central axis.^[1]

In the adult

Organs in the adult midgut

• distal
  half of 2nd part, 3rd and 4th parts)
• Jejunum
• Ileum
• Cecum
• Appendix
• Ascending colon
• Hepatic flexure
  of colon
• proximal
  two-thirds)

Vascular, lymphatics and innervation

Arterial supply to the midgut is from the

• Malrotation of the midgut during development can lead to volvulus.
• Pain in the midgut is referred to the region around the belly button

As stated, in development a loop of midgut herniates outside of the abdominal cavity into the umbilical cord. If this persists after birth it is called an

See also

• Foregut
• Hindgut

References

External links

• digest-020—Embryo Images at University of North Carolina
• radio/450 at eMedicine – "Midgut Volvulus"
• 00494 at CHORUS

• Umich.edu – development