At the beginning of the refractory period,why does the charge within a neuron from positive to negative?
A) An inhibitory postsynaptic potential is produced.
B) Sodium channels open allowing sodium to leave the neuron.
C) Potassium channels open allowing potassium to leave the neuron.
D) The concentration of negatively charged proteins increases.

Question

Quizplus · Accepted Answer

During the refractory period, the neuron has just fired an action potential and the membrane potential becomes more negative than the resting potential. This is due to the opening of potassium channels, which allows positively charged potassium ions to leave the neuron, causing the membrane potential to become more negative. This makes it more difficult for the neuron to fire another action potential during this time.

At the Beginning of the Refractory Period,why Does the Charge