Assertion: adenosine | /r/CapableOf | act through a 1 receptors
Facets:
value: in cardiac pacemaker cells
type: LOCATION
Source sentences:
text: In cardiac pacemaker cells located in the sinoatrial node, adenosine acting through A 1 receptors inhibits the pacemaker current (I f ), which decreases the slope of phase 4 of the pacemaker action potential thereby decreasing its spontaneous firing rate (negative chronotropy).