Neurons, like all cells, maintain different concentrations of certain ions (charged atoms) across their cell membranes. Imagine the case of a boat with a small leak below the water line. In order to keep the boat afloat, the small amount of water entering through the leak has to be pumped out, which maintains a lower water level relative to the open sea. Neurons do the same thing, but they pump out positively charged sodium ions. In addition, they pump in positively charged potassium ions (potash to the gardeners out there!!) Thus there is a high concentration of sodium ions present outside the neuron, and a high concentration of potassium ions inside.
Virat Kohli - first to 4000 runs in IPL. 4002 Runs for Virat Kohli in his IPL career. In his innings of 113 against Kings XI Punjab, he became the first batsman to complete 4000 runs in the IPL, going past Suresh Raina's tally of 3985. Before the start of the season, Kohli was fourth on the list.
He made his highest score in 2004, when he made 248 not out against Bangladesh at the Bangabandhu National Stadium, Dhaka. Tendulkar has scored six double centuries and remained unbeaten on 15 occasions. His centuries have come in 30 different cricket grounds, with 27 of them being scored in venues outside India.