Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 48 - 48.3 - Concept Check - Page 1075: 3

Answer

The rising phase of the action potential is facilitated by positive feedback and the falling phase is facilitated by negative feedback.

Work Step by Step

After the initial positive feedback builds to meet the threshold of the action potential, negative feedback gradually resets the membrane potential.
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