Assertion: pacemaker's action potential | /r/HasProperty | triggered at that site
Facets:
Source sentences:
text: Once the local currents from active cell A depolarize the membrane of cell B near the gap junction to the threshold level, an action potential will be triggered at that site and will be conducted over cell B. Because cell B branches (a common morphological characteristic of cardiac muscle fibers), its action potential will evoke action potentials on cells C and D.