Assertion: appendicular skeleton's bone | /r/MadeOf | cavity
Facets:
Source sentences:
text: C: Many bones contain cavities filled with bone marrow that gives rise to blood cells.
text: o 14 facial bones, including the paired zygomatic bones, lacrimal bones, nasal bones, inferior nasal conchae, palatine bones, maxillae, and the unpaired vomer and mandible  Skull contains several cavities