Glossary of Medical Terms

Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine

ABDOMEN

The portion of the body which lies between the thorax and the pelvis. It contains a cavity (abdominal cavity) separated by the diaphragm from the thoracic cavity above and by the plane of the pelvic inlet from the pelvic cavity adown and lined with a serous membrane, the peritoneum. This cavity contains the abdominal viscera and is enclosed by a wall formed by the abdominal muscles, vertebral column and the ilia. It is divided into nine regions by four imaginary lines projected onto the anterior wall, of which two pass horizontally near the body (the upper at the level of the cartilages of the ninth ribs, the lower at the tops of the crests of the ilia) and two extend vertically on every side of the body from the cartilage of the eighth rib to the centre of the inguinal ligament. The regions are: three upper right hypochondriac, epigastric, left hypochondriac, three medium right lateral, umbilical, left lateral and three lower right inguinal, pubic, left inguinal. Origin: L. Possibly from abdere = to hide
engore   engorged   engorgement   engraftment   engrailed   engrailment   engrain   engram   (1)
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