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Cardiac Action Potentials

Cardiac Action Potentials

18. The Heart / Cardiac Action Potentials / Problem 6

Which of the following statements about the plateau phase of a cell's action potential is true?

ANSWERS OPTIONS

A

It shortens the duration of the action potential.

B

It ensures repolarization for a sufficient period.

C

Voltage-gated calcium channels close during this time.

D

It helps prevent tetanic contractions.

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