Assertion: cardiac muscle's number | /r/CapableOf | enter the skeletal muscle fiber
Facets:
value: from the extracellular fluid
type: TRANSITIVE-OBJECT
Source sentences:
text: First, the action potential of skeletal muscle is caused almost entirely by sudden opening of large numbers of so-called fast sodium channels that allow tremendous numbers of sodium ions to enter the skeletal muscle fiber from the extracellular fluid.