Assertion: cardiac muscle's depolarization | /r/CapableOf | arise in small group of pacemaker cells
Facets:
value: within the sa node
type: LOCATION
value: normally
type: DEGREE
Source sentences:
text: gap junctions gap junctions interconnect myocardial cells and allow action potentials to spread from one cell to another - the initial excitation of one cardiac cell eventually results in the excitation of all cardiac cells (initial depolarization normally arises in small group of pacemaker cells within the SA node)