11.   Following this permeability change, the sodium ions are pumped out from the fibre so restoring the original state.

12.   The sodium is only able to pass into the membrane through sodium ion channels distributed along the axon.

13.   It is possible that lithium has an effect on the conduction in an axon by replacing the sodium ion and it is used in the treatment of depressive illness.

14.   Continuous monitoring of intragastric sodium ions with a selective electrode is a practical means of assessing DGR.

15.   Cells in the heart suck potassium ions in and push sodium ions out.

16.   Inside cells, the concentration of sodium ions is usually lower and the concentration of potassium ions is higher than outside cells.

17.   Inside the pacemaker cell, where the positively-charged sodium ions leak in, the electrical charge gets more positive.

18.   Ion channels in a neighboring cell sense the electron discharge and open, allowing sodium ions to rush in.

19.   The plants that can thrive under salty conditions absorb sodium ions into their cells, then get the sodium safely out of the way.

20.   The scintillations of light that Rennich also saw in his aura, Cutrer says, were most likely a result of sodium ions flooding and overexciting the visual neurons.