Answer;
Sodium and potassium ions
Explanation;
- Sodium and potassium ions are important elements in the transmission of impulses in the neurons.
- The resting potential of a neuron is negative when the membrane is at rest due to the accumulation of more sodium ions outside the cell than potassium ions inside the cell.
- When potassium enters the cell, it stimulates a sodium-potassium exchange across the cell membrane. In the nerve cells, this exchange generates an electrical potential which allows the conduction of nerve impulses.