The term intraperitoneally ( lat. Intra , inside 'and peritoneum , the peritoneum') is used for the anatomical location specified and designated by the peritoneum coated (peritoneum) structures in the peritoneal cavity .
The organs located intraperitoneally include those that are attached to the body wall by mesenteries . These include: stomach , small intestine (with the exception of the duodenum , which in humans is secondary to the pars superior retroperitoneally ), parts of the large intestine , spleen , liver and gall bladder . According to this definition, the uterus and ovaries are also located intraperitoneally , since the former have grown up into the abdominal cavity and the latter into it. Primarily placed outside the abdominal cavity, they are therefore secondarily intraperitoneal . In contrast to this, the pancreas is a primarily intraperitoneally located organ, which later comes to lie retroperitoneally in the further embryonic development.
Under intraperitoneal administration (abbreviation ip ) refers to the administration of a medicament into the abdominal cavity. It belongs to the parenteral forms of administration . Intraperitoneal injections or infusions are usually only made in animals in which blood vessels can no longer be pierced due to low blood pressure , and especially for the administration of blood substitute fluids. The high absorption power of the tunica serosa is used here . This form cannot be used in cases of ascites.