The action potential is a sudden positive shift in the cardiomyocyte's cellular membrane potential, termed depolarization. Depolarization not only initiates contraction within the affected cardiomyocyte (Described in Cardiac Excitation-Contraction Coupling), but also initiates depolarization of adjacent cardiomyocytes.
Polar Coordinates The coordinate system which depicts the points from the pole to the certain distance at a particular angle is known as âpolar coordinatesâ. The positive horizontal axis in which that particular angle rotates is named as âpolar axisâ.
The Arctic (North Pole). Polar Regions are the ice-covered and beautiful areas around the far south and north ends of the globe. These two freezing global terminal points are recognised as the North and South Pole and the continental regions of Arctic and Antarctica settle in these two polar coordinates respectively.he weather is very cold, far below freezing temperatures, all year around in both North and South Pole. Bitter cold winds whip the earth's Polar Regions and so, these vast and remote territories are difficult to access. Weather plays a wild game in the Polar Regions.