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.
What is a penny? A penny is a British coin worth 1/100 of a pound sterling,  about 1.5 U.S. cents as of 05/2016.    Because of historic ties to England, the lowest-denomination coin  â¦used in the US is called a penny in common usage, but the formal  name is cent. The US Mint has never made a coin officially  called a penny.