Assertion: head's structure | /r/PartOf | the skeleton
Facets:
value: in most vertebrates
type: OTHER
Source sentences:
text: bone os osseous, osteal, or osteoid any of the various structures that make up the skeleton in most vertebrates; the porous rigid tissue of which these parts are made, consisting of a matrix of collagen and inorganic salts, esp calcium phosphate, interspersed with canals and small holes