anatomical boundary

^ http://purl.obolibrary.org/obo/CARO_0000010

A non-material anatomical entity of two dimensions. Anatomical boundaries are contiguous structures.

Term info


Except in the case of abstracted fiat boundaries such as the midline plane of an organism, all 2D anatomical entities have a 3 dimensional projection. For example, the surface of the shell of a muscle has a distinct shape that projects into the third dimension. Note that boundaries are 2D structures. They have no thickness - and so can not be sites of gene expression or gene product localisation. For this, use boundary region terms.