Question

Hello, I need help in a MCQ question. Thank you.

Which one of these processes causes the neuron to return to the "resting potential" from the state of "action potential"?

1) Ion channels allow positively charged ions to flow out of the neuron.

2) Sodium-potassium pumps remove positively charged ions from the inside of the neurons until the "polarized state" is restored.

3) Enzymes dissolve the positively charged ions in the cells.

4) Negatively charged ions flow into the neuron to neutralize the positively charged ions.

Answer 1

Question

The action potential take place when one neuron communicate with another neuron. During resting potential, sodium-potassium pump , throw sodium ion from inside to outside and K+ ion from outside of the cell to inside. This process is go on until resting potential is achieved. Hence, option 2 is correct.