Question

During depolarization,

• A. Na+ moves out of the neuron
• B. K+ moves into the neuron
• C. organic ions move out of the neuron
• D. Na+ moves into the neuron

Answer 1

The correct option is D Na+ moves into the neuron

When a stimulus is applied, the neuron becomes permeable to Na+ and Na+ moves into the neuron. This leads to the outer surface of the membrane becoming negatively charged and the inner side becoming positively charged. This phenomenon is called depolarisation.