Assertion: pacemaker | /r/CapableOf | send electrical jolt
Facets:
value: to force contraction
type: PURPOSE
Source sentences:
text: Pacemakers monitor the heart rate and send an electrical jolt to force contraction when the heartbeat is delayed; they stand in for the heart's natural pacemaker, a cluster of cells in the right atrium (the sinoatrial node) that sends out regular jolts of electricity.