The intrinsic rate of the AV node is:
A) set by the sympathetic nervous system.
B) 15-40 bpm.
C) 60-100 bpm.
D) 40-60 bpm.

Question

Quizplus · Accepted Answer

The intrinsic rate of the AV node is typically around 40-60 bpm, meaning that in the absence of any outside influences, it would generate impulses at that rate. This rate is slower than the SA node's intrinsic rate of 60-100 bpm. The intrinsic rates of both the AV and SA nodes are set by specialized pacemaker cells within the nodes, rather than the sympathetic or parasympathetic nervous system.

The Intrinsic Rate of the AV Node Is