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.
This process created two parts: a small coin, which was called the dump in Australia, and a ring, which was called a holey dollar. One holey dollar was worth five shillings (a quarter of one pound sterling), and one dump was worth one shilling and three pence (or one quarter of a holey dollar).he history of currency in Australia could be said to begin in 1800, when Governor Philip Gidley King issued a proclamation setting the value of a variety of foreign coins in New South Wales.