[Obo-anatomy] connectedness

[Chris M. <cjm...@lb...>]

I'd like to add the following to RO2:

'continuous with'
'attached to'
'articulates with'

The main reference I can find for the FMA relations is:

@article{smith2005anatomical,
  title={{Anatomical information science}},
  author={Smith, B. and Mejino Jr, J.L.V. and Schulz, S. and Kumar, A. and Rosse, C.},
  journal={Spatial Information Theory},
  pages={149--164},
  year={2005},
  publisher={Springer}
}

This provides examples but not a precise definition or axioms for 'attached to'

> To understand the relation attached_to, consider the junction depicted macroscopi- cally in Figure 3, which shows a bone and a muscle, the latter consisting of a tendon and a muscle belly, and (on a finer-grained level) of collagen fibers, muscle fibers and bone matrix. The bone itself is well delimited: it ends where the bone matrix ends. The same applies to the muscle fibers which, due to their contractile elements, are clearly demarcated from the tendon. But collagen fibers cross all of these boundaries. One fiber might overlap with the muscle fascia and the tendon, another with the tendon and the bone. Tendon and bone can be separated only by severing the fibers in question.


It seems these should be subproperties of 'connected to' - we didn't agree on a definition for this in Denver so I suggest we punt on this for now and focus on defining the specific properties.

Can someone suggest the appropriate characteristics for these properties? Are they all mutually disjoint? Presumably none of them are transitive. They are all presumably symmetric (these are all instance level relations of course).