Assertion: cardiac muscle's period | /r/HasProperty | required for the cardiac muscle cells
Facets:
value: to pump blood
type: PURPOSE
Source sentences:
text: This phenomenon accounts for the long refractory periods required for the cardiac muscle cells to pump blood effectively before they are capable of firing for a second time.
text: This phenomenon accounts for the long refractory periods required for the cardiac muscle cells to pump blood effectively before they are capable of firing for a second time.
text: This phenomenon accounts for the long refractory periods required for the cardiac muscle cells to pump blood effectively before they are capable of firing for a second time.