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.
Rectangular coordinates are in the form (x,y), where 'x' and 'y' are the horizontal and vertical distances from the origin: Polar coordinates are in the form: (r, q), where 'r' is the distance from the origin to the point, and ' q ' is the angle measured from the positive 'x' axis to the point:o enter polar coordinates and convert them to polar coordinates: (a) The 'X' edit box value must be '2'. To change the 'X' value, you first need to click on the 'X' edit box. (b) Click on the 'A' edit box and type the 'r' coordinate of the point.