Assertion: cardiac muscle's period | /r/HasProperty | due
Facets:
value: to the leaking of potassium ions
type: CAUSE
Source sentences:
text: The relative refractory period is due to the leaking of potassium ions, which makes the membrane potential more negative (i.e. it is hyperpolarised), this resets the sodium channels; opening the inactivation gate, but still leaving the channel closed.
text: The refractory periods are due to the inactivation property of voltage-gated sodium channels and the lag of potassium channels in closing.