FMA definition : subdivision of front of trunk, each instance of which has as its constitutional part
some complete set of lumbar vertebral arches (L1-L5); it is demarcated from the abdomen
internally by the superior surface of the diaphragm and externally by the costal margin
and from the pelvis by the plane of the superior pelvic aperture; together with the
abdomen and pelvis constitutes the trunk. Examples: There is only one abdomen.;
subdivision of front of trunk, each instance of which has as its constitutional part
some complete set of lumbar vertebral arches (L1-L5); it is demarcated from the abdomen
internally by the superior surface of the diaphragm and externally by the costal margin
and from the pelvis by the plane of the superior pelvic aperture; together with the
abdomen and pelvis constitutes the trunk. Examples: There is only one abdomen.