Assertion: ampulla's muscle | /r/CapableOf | originate on trapezium
Facets:
Source sentences:
text: A muscle of the hand originating on the flexor retinaculum and trapezium, trapezoid, and capitate and inserted on the lateral side of the base of the first phalanx of the thumb.
text: A muscle of the hand originating on the trapezium and flexor retinaculum and inserted in the first metacarpal.