[NA]. The part of the trunk that lies between the thorax and the pelvis. The abdomen does not include the vertebral region posteriorly but is considered by some anatomists to include the pelvis (abdominopelvic cavity). It includes the greater part of the abdominal cavity (cavum abdominis [NA]), and is divided by arbitrary planes into nine regions. See Also: abdominal regions, under region. Syn: venter(1).
Origin
[L. abdomen, etym. uncertain]
acute abdomen
boat-shaped abdomen
carinate abdomen
navicular abdomen
abdomen obstipum
pendulous abdomen
protuberant abdomen
scaphoid abdomen
surgical abdomen