6 Explain why the SA node generates action potentials at a frequency of approximately 100 beats per minute even though the average resting heart rate is 70 beats per minute?

1 answer

Answer

1015078

2026-02-22 10:25

+ Follow

This is because parasympathetic nerve innervation synapsing in the SA node reduces heart rate from 100bpm to 70bpm as its basal tone

ReportLike(0ShareFavorite

Copyright © 2026 eLLeNow.com All Rights Reserved.