Pacemaker cells in the SA node
A) have a well-defined resting potential.
B) generate action potentials that spread to the myocardium.
C) are highly contractile.
D) all of the above
E) none of the above

Question

Quizplus · Accepted Answer

Pacemaker cells in the SA node generate action potentials that spread to the myocardium, but they do not have a well-defined resting potential nor are they highly contractile.

Pacemaker Cells in the SA Node