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Peritoneum. The peritoneum is the serous membrane forming the lining of the abdominal cavity or coelom in amniotes and some invertebrates, such as annelids. It covers most of the intra-abdominal (or coelomic) organs, and is composed of a layer of mesothelium supported by a thin layer of connective tissue.
Extraperitoneal fascia (also: endoabdominal fascia or subperitoneal fascia) is a fascial plane – consisting mostly of loose areolar connective tissue – situated between the fascial linings of the walls of the abdominal and pelvic cavities (transversalis fascia, anterior layer of thoracolumbar fascia, iliac fascia, and psoas fascia) externally, and the parietal peritoneum internally.
The peritoneal cavity is a potential space located between the two layers of the peritoneum —the parietal peritoneum, the serous membrane that lines the abdominal wall, and visceral peritoneum, which surrounds the internal organs. [1] While situated within the abdominal cavity, the term peritoneal cavity specifically refers to the potential ...
The extraperitoneal space is the portion of the abdomen and pelvis which does not lie within the peritoneum. It includes: Retroperitoneal space, situated posteriorly to the peritoneum. Preperitoneal space, situated anteriorly to the peritoneum. Retropubic space, deep to the pubic bone. Retro-inguinal space, deep to the inguinal ligament.
The abdominal cavity is a large body cavity in humans [1] and many other animals that contain organs. It is a part of the abdominopelvic cavity. [2] It is located below the thoracic cavity, and above the pelvic cavity. Its dome -shaped roof is the thoracic diaphragm, a thin sheet of muscle under the lungs, and its floor is the pelvic inlet ...
In anatomy, a spatium or anatomic space is a space (cavity or gap). Anatomic spaces are often landmarks to find other important structures. When they fill with gases (such as air) or liquids (such as blood) in pathological ways, they can suffer conditions such as pneumothorax, edema, or pericardial effusion. Many anatomic spaces are potential ...
The liver, as seen from behind. The bare area is visible on the upper-right, labeled as nonperitoneal surfaces. The bare area of the liver (nonperitoneal area) is a large triangular area on the diaphragmatic surface of the liver. It is the only part of the liver with no peritoneal covering, although it is still covered by Glisson's capsule.
In human anatomy, the greater sac, also known as the general cavity (of the abdomen) or peritoneum of the peritoneal cavity proper, is the cavity in the abdomen that is inside the peritoneum but outside the lesser sac. A description of the greater sac in three dimensions. It is connected with the lesser sac via the omental foramen, also known ...