Q&A

What is the difference between intraperitoneal and retroperitoneal?

What is the difference between intraperitoneal and retroperitoneal?

retroperitoneal: Located outside of the peritoneum. intraperitoneal: Within the cavity of the peritoneum. mesentery: The membrane that attaches the intestines to the wall of the abdomen and maintains their position in the abdominal cavity to supply them with blood vessels, nerves, and lymphatics.

What organs are in the intraperitoneal?

Intraperitoneal organs include the stomach, spleen, liver, first and fourth parts of the duodenum, jejunum, ileum, transverse, and sigmoid colon.

How do you remember intraperitoneal and retroperitoneal organs?

A useful mnemonic to help in recalling which abdominal viscera are retroperitoneal is SAD PUCKER:

  1. S = Suprarenal (adrenal) Glands.
  2. A = Aorta/IVC.
  3. D =Duodenum (except the proximal 2cm, the duodenal cap)
  4. P = Pancreas (except the tail)
  5. U = Ureters.
  6. C = Colon (ascending and descending parts)
  7. K= Kidneys.
  8. E = (O)esophagus.

What are the retroperitoneal organs?

The retroperitoneal space contains the kidneys, adrenal glands, pancreas, nerve roots, lymph nodes, abdominal aorta, and inferior vena cava.

What does secondarily retroperitoneal mean?

Secondarily retroperitoneal: organs which had a mesentery once and lost it during development, such as the pancreas, duodenum, ascending and descending colons.

Is Kidney a retroperitoneal organ?

The kidneys are considered “retroperitoneal” organs, which means they sit behind a lining in the abdominal cavity, unlike all other abdominal organs.

What does the term retroperitoneal mean give an example of a retroperitoneal organ?

The first part of the rectum lies posterior to the peritoneum, hence it is retroperitoneal. The kidneys, and the large vessels – the aorta and the inferior vena cava- lie posterior to the peritoneal cavity: retroperitoneal. Several pelvic organs lie inferior to the peritoneum: subperitoneal.