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.
Geodetic Coordinates. the geographical latitude and longitude of a point on the earthâs surface, determined by means of geodetic measurement of the distance (mainly by the method of triangulation) and the bearing (azimuth) from several other points whose geographic coordinates are known.eodetic coordinates are calculated on the surface of a reference ellipsoid, which is a characterization of the shape and dimensions of the earth.