Which of the following is most clearly characterized by a temporary inflow of positively charged sodium ions through an axon membrane?
A) reuptake
B) an action potential
C) a refractory period
D) a resting potential

Question

Quizplus · Accepted Answer

An action potential is characterized by a temporary inflow of positively charged sodium ions through an axon membrane, followed by an outflow of positively charged potassium ions. This causes a brief electrical charge that quickly propagates down the axon. Reuptake refers to the process by which neurotransmitters are taken back up into the presynaptic neuron after they have been released. A refractory period is a period of time during and after an action potential when the neuron is unable to fire another action potential. A resting potential refers to the electrical charge across the membrane of a neuron at rest, when it is not sending a signal.

Which of the Following Is Most Clearly Characterized by a Temporary