Assertion: sacrum | /r/HasProperty | key stone of the pelvis
Facets:
Source sentences:
text: The sacrum is the key stone of the pelvis and serves several important functions in the skeletal, muscular, nervous, and female reproductive systems.
text: Acting as the keystone of the pelvis, the sacrum locks the hip bones together on the posterior side and supports the base of the spinal column as it intersects with the pelvis.