Question

Why potassium channels are called inward rectifiers?

Answer 1

Answer:

Explanation:

when permeability of K+ ions increases,nerve impulse conducts at its best rate.

And permeability of K+ ions increases when inward rectifiers are activated.

Moreover,due to inward negative membrane potential some potassium ions diffuses out of nerve membrane from higher concentration towards lower concentration.

These are all related to nerve impulse conduction.

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Answer 2

Inward rectifiers are a class of K+ channels that can conduct much larger inward currents at membrane voltages negative to the K+ equilibrium potential than outward currents at voltages positive to it, even when K+ concentrations on both sides of the membrane are made equal.