Slowest conducting pa in the hea is:
Both SA node and AV node contain slowly depolarizing cells. Both of them conduct impulse slowly. Velocity of impulse through both SA node and AV node is about 0.05 - 0.1 sec. In addition, AV node has 2 more propeies: Small diameter of fibers Fewer gap junctions between adjacent cells. These features make the AV node even slower in conducting the impulse.
SA node
AV node
Atrial fibers
Bundle branches
Conducting System of Hea