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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Slowest conducting pa in the hea is:
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The correct answer 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.