FMA definition : subdivision of trunk, each instance of which has as its constitutional part some complete
set of vertebral arches (T1-S5) and anatomical entities located posterior to them:
together with front of trunk constitutes the trunk. Examples: There is only one back.;
subdivision of trunk, each instance of which has as its constitutional part some complete
set of vertebral arches (T1-S5) and anatomical entities located posterior to them:
together with front of trunk constitutes the trunk. Examples: There is only one back.