Question

For visual sense, the nerve impulse is generated by

• A. Depolarization
• B. Repolarization
• C. Hyper polarization
• D. Depolarization and repolarization

Answer 1

The correct option is A Depolarization

For visual sense, the nerve impulse is generated by depolarization. The optic nerve is the nerve which carries the visual impulse from the eye to the optic lobe of the forebrain. During depolarization, the charge within the cell rapidly shifts from negative to positive. For this rapid change to take place within the interior of the cell, several events must occur along the plasma membrane of the cell as well. So, the correct answer is option A.