Check out this Cartoon on how your thyroid works. Thyroid issues can get complicated, so this might help explain a little bit better what dotors do not explain to their patients. Check out that T-shirt here:
In a country of increasing drug addiction, more than half of all Americans aged 12 and older drink alcohol, with more than of that figure being binge drinking. Another 30 million use or abuse recreational drugs and prescription medications.
This diagram shows how sodium and potassium ions are pumped through protein channels. The sodium ions are pumped out of the cell, while potassium is pumped into the cell. The movement of these ions creates resting potential and action potential.