part of part of bone element anatomical conduit bone foramen http://upload.wikimedia.org/wikipedia/commons/8/81/Gray193.png in FMA and ZFA this is a conduit space, not a conduit. Note there may be some additional disambiguation required: foramen is used loosely in the sense of any opening (e.g. foramen primum). FMA appears to use cranial conduit (undefined) in the sense of any foramen of the skull (includes mental foramen, which is not in the cranium proper). foramen VHOG:0001760 UBERON:0005744 Anatomical space that is an opening in a bone, usually for passage of blood vessels or nerves. TAO:0001736 AAO:0010438 ZFA:0005386