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spin [16.1K]
3 years ago
11

Spontaneous depolarization of the nodal tissue in the sa node occurs at ____________ action potentials per minute:

Biology
1 answer:
USPshnik [31]3 years ago
8 0

<span>It is 70-80 action potentials per minute.  </span>The rate of phase 4 depolarization in the SA node sets the Heart rate, <span>The SA node serves as the Pacemaker</span> It has the greatest  automaticity And ability to  spontaneously generate an action potential.  

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