Peritoneal Cavity – Part 4 – Intraperitoneal and Retroperitoneal Organs – Anatomy Tutorial

Peritoneal Cavity – Part 4 – Intraperitoneal and Retroperitoneal Organs – Anatomy Tutorial


So which organs are intraperitoneal? We’ve
got the liver, the spleen, the stomach, the first part of the duodenum. We’ve got the
jejunum and ileum. So all these loops of intestine. Then the transverse colon is obviously intraperitoneal.
We’ve got the sigmoid colon, which is intraperitoneal. And the superior parts of the rectum are also
intraperitoneal. So the retroperitoneal organs are the kidneys
at the back. So you can see the kidneys here. And the adrenal gland which sit on top are
retroperitoneal. We’ve got the head and the body of the pancreas, which are retroperitoneal
(the tail is actually intraperitoneal). And then we’ve got the second to fourth parts
of the duodenum, so the bits between the duodenojejunal flexure. So we’ve got the second to fourth
parts of the duodenum which are retroperitoneal. And then you’ve got the ascending and descending
parts of the colon, which are retroperitoneal.

31 Replies to “Peritoneal Cavity – Part 4 – Intraperitoneal and Retroperitoneal Organs – Anatomy Tutorial”

  1. just a question, my classmates and I are having some debate about this currently. Because the kidney has a bare area, could it not be classified as retroperitoneal? Or is it considered intraperitoneal because the bare area is in contact with the diaphragm, and not the posterior body wall?

  2. Kidneys are retroperitoneal, they're not enveloped by the peritoneum, only their anterior side touches the peritoneum. Thus it's retro.

  3. YEAH! My teacher said that ovaries are the only organs that REALLY are inside the peritoneal cavity! However, all that organs lie spleen, liver etc are called intraperitoneal because intraperitoneal in reality, doesn't mean "being inside of peritoneal" like in tha literal translation from latin, it only means that those organs are in contact with two types of peritoneyms. I think the author of the video forgot to mention ovaries and this is crucial! Great video, though…

  4. A question….Is there a term like "extraperitoneal organs"???? bcz in tutorial its only intra and reteroperitoneal organs. what about ureters, uterus, my book says they are intraperitoneal organs. so im just confused how to remember which organ is which…

  5. also the last part of the oesophagus is intraperitoneal (the passage inbetween the hiatus oesophageus and the cardia of the stomach)

  6. what about the appendix? also, when can the appendix be retroperitoneal? can a retrocecal appendix be retroperitoneal??thanks in advance.

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