Ion concentrations are first significantly affected after ________ action potential(s).
A) one
B) a few dozen
C) a few hundred
D) a few thousand
E) a few million

Question

Quizplus · Accepted Answer

Ion concentrations in neurons are first significantly affected after a few thousand action potentials. This is because each individual action potential only causes a very small change in ion concentration, which the neuron's ion pumps can quickly restore. It takes a large number of action potentials to accumulate a significant change that the pumps cannot immediately correct.

Ion Concentrations Are First Significantly Affected After ________ Action Potential(s)