midgut loop

mid·gut loop

(mid'-gut lūp)
The U-shaped part of the embryonic midgut that herniates into the extraembryonic celom in the proximal part of the umbilical cord when the embryonic celom (primordial abdominal cavity) temporarily becomes too small to contain the intestinal loops.
Synonym(s): umbilical intestinal loop.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Because the appendix is located in an abnormal position there are two different anatomic anomalies attributed to a left-sided appendix: situs inversus and malrotation of the midgut loop. In case of abnormal anatomical site of appendix as in situs inversus or gut malrotation, atypical presentation begins with epigastric pain radiating to left lower quadrant of abdomen along with tenderness confusing with diverticulitis.
Primarily, there are two different anatomic anomalies attributed to a left-sided appendix: situs inversus and malrotation of the midgut loop. Situs inversus totalis is a rare anatomic anomaly with an estimated incidence of 1:20,000 in the general population and an autosomal recessive mode of inheritance2.
The appendix develops from the midgut loop together with the caecum, ascending colon and the proximal two-thirds of the transverse colon.
At about 10 weeks of gestation, the intestine derived from midgut loop returns back.