Assertion: metacarpal's base | /r/HasProperty | developed
Facets:
value: from the primary centers
type: LOCATION
Source sentences:
text: The body and head of the first metacarpal are developed from the primary center, and its base from a secondary center, in the case of the second, third, fourth, and fifth metacarpals the bodies and bases are developed from the primary centers, the heads in these instances being derived from the secondary centers.