â¢ When the axon hillock is depolarized to threshold, an action potential is generated. Voltage-gated. channels open, thereby increasing permeability of the neuron first to sodium and then to. potassium. â¢ As sodium moves rapidly into the neuron, it produces the rising phase of the action potential. â¢ As the inward movement of sodium slows and the outward movement of potassium increases, the. membrane repolarizes.
Why is 25 pound called a pony in cockney slang. Pony, in British (especially London) slang, is the term for a sum of Â£25.Possibly derived from Indian Ruppee featuring animals on their currency.hy is 25 pound called a pony in cockney slang. Pony, in British (especially London) slang, is the term for a sum of Â£25.
How much money do it cost for a pony? In Â£ it is around Â£2000 - Â£7000, depending on how experienced they are and what condition they are in. Also you have to think about the tack you will need ( e.g: Saddle, br â¦ idle, martingale, headcollar, lead rope, rugs and so on) depending on if you are going to show your pony.