Assertion: cardiac muscle's period | /r/HasProperty | followed by brief relaxation periods
Facets:
Source sentences:
text: Cardiac muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods.
text: The cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods when the heart fills with blood for the next cycle.
text: Cardiac muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods.
text: Cardiac muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods.