Sign in with Apple. Description The retroperitoneal space retroperitoneum is the anatomical space sometimes a potential space in the abdominal cavity behind the peritoneum. It has no specific delineating anatomical structures.
Retroperitoneal structures Structures that lie behind the peritoneum are termed "retroperitoneal". Primarily retroperitoneal, meaning the structures were retroperitoneal during the entirety of development: urinary adrenal glands kidneys ureter circulatory aorta inferior vena cava digestive esophagus thoracic part, part inside abdominal cavity is intraperitoneal rectum part, lower third is extraperitoneal Secondarily retroperitoneal, meaning the structures initially were suspended in mesentary and later migrated behind the peritoneum during development: the head, neck, and body of the pancreas but not the tail, which is located in the splenorenal ligament the duodenum, except for the proximal first segment, which is intraperitoneal ascending and descending portions of the colon but not the transverse colon, sigmoid or the cecum Retroperitoneal structures Images.
Subscribe now Discover our subscription plans Subscribe. Manage cookies Accept. Cookie settings. Essential technical cookies Description. Analytics cookies Description. Google Analytics. Save and continue. This page explains the development, adult configuration and characteristics of the extraperitoneal location, that includes the retroperitoneal location.
Anatomical structures in item: Peritoneum. Requirements for usage You are free to use this item if you follow the requirements of the license: View license. If you use this item you should credit it as follows: For usage in print - copy and paste the line below: "Extraperitoneal: retroperitoneal, subperitoneal, preperitoneal" at AnatomyTOOL. To be reviewed Information Comment.
Extraperitoneal: retroperitoneal, subperitoneal, preperitoneal. Uploaded by: opgobee. To be reviewed. Status: to be reviewed. The structures in the abdomen can lie in one of three locations in relation to the peritoneum: intraperitoneal, secondary retroperitoneal or primary retroperitoneal. MORE 0. Educational level.
User comments. The gastrocolic omentum hangs from the greater curve of the stomach and loops down in front of the intestines before curving upwards to attach to the transverse colon. Like a curtain of tissue, it is draped in front of the intestines to insulate and protect them. Substructures of the peritoneum : This is a midsagittal, cross-section drawing of the epiploic foramen, the greater sac or general cavity red , and the lesser sac or omental bursa blue. The structures in the abdomen are classified as intraperitoneal, retroperitoneal, or infraperitoneal depending on whether they are covered with visceral peritoneum and are attached by mesenteries, such as the mensentery and mesocolon.
Intraperitoneal organs include the stomach, the first five centimeters and the fourth part of the the duodenum, the jejunum, the ileum, the cecum, the appendix, the transverse colon, the sigmoid colon, and the upper third of the rectum.
Other organs located in the intraperitoneal space are the liver, spleen, and the tail of the pancreas. In women, the uterus, fallopian tubes, ovaries, and gonadal blood vessels are located in the intraperitoneum. Retroperitoneal structures include the rest of the duodenum, the ascending colon, the descending colon, the middle third of the rectum, and the remainder of the pancreas. Other organs located in the retroperitoneal space are the kidneys, adrenal glands, proximal ureters, and renal vessels.
Organs located below the peritoneum in the subperitoneal space include the lower third of the rectum and the urinary bladder. Structures that are intraperitoneal are generally mobile, while those that are retroperitoneal are relatively fixed in their location. Some structures, such as the kidneys, are primarily retroperitoneal, while others such as the majority of the duodenum, are secondarily retroperitoneal, meaning that structure developed intraperitoneally, but lost its mesentery and thus became retroperitoneal.
Peritoneum : The peritoneum illustrated, indicated by blue. Privacy Policy. Skip to main content. Digestive System. Search for:.
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