Canadian Medical Guide > Anatomy > Body Regions > Abdomen > Abdominal Cavity Terms and Definitions

Abdominal Cavity

Medical Definition:	The region in the abdomen extending from the thoracic DIAPHRAGM to the plane of the superior pelvic aperture (pelvic inlet). The abdominal cavity contains the PERITONEUM and abdominal VISCERA, as well as the extraperitoneal space which includes the RETROPERITONEAL SPACE.
Guide Notes:	prefer specifics; ABDOMEN is also available, use author's language
Previously Indexed:	Abdomen (1964-2002)

Abdominal Cavity Categories.

	Peritoneum - The endothelial lining of the ABDOMINAL CAVITY. The parietal peritoneum covers the inside of the ABDOMINAL WALL and the visceral peritoneum covers the bowel, the MESENTERY, and certain of the organs. The portion that covers the bowel becomes the serosal layer of the bowel wall.
	Retroperitoneal Space - An area occupying the most posterior aspect of the ABDOMINAL CAVITY. It is bounded laterally by the borders of the quadratus lumborum muscles and extends from the DIAPHRAGM to the brim of the true PELVIS, where it continues as the pelvic extraperitoneal space.

Abdominal Cavity Medical Definitions and Terms

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