Physiology Test Question

The hyperpolarization phase of the action potential is due to:

	(A) the opening of voltage-gated Cl⁻ channels
	(B) the prolonged opening of voltage-gated K⁺ channels
	(C) the closure of resting Na⁺ channels
	(D) due to the closure of Cl⁻ channels
	(E) None of the above

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Posted: Wednesday, July 16, 2014
Last updated: Thursday, July 10, 2014

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