Pacemaker cells in the SA node
A) have a well- defined resting potential.
B) show a slow spontaneous depolarization.
C) are connected by gap junctions to atrial myocytes.
D) both B and C
E) both A and C

Question

Quizplus · Accepted Answer

Pacemaker cells in the SA node do not have a well-defined resting potential; instead, they exhibit a slow spontaneous depolarization due to the funny current (If). They are also connected by gap junctions to atrial myocytes, allowing for the propagation of electrical impulses.

Pacemaker Cells in the SA Node