Endothelial hyperpolarization is transmitted to the ascular smooth-muscle cells, resulting in decreased cytosolic calcium, which in turn promotes asodilatation.

• 内皮细胞超极化传递到血管平滑肌细胞那里，导致了细胞内钙浓度的降低，从而促进了血管扩张.；实验性钾耗竭可抑制内皮细胞依赖性血管舒张。