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 points in the polar coordinates are represented as `(r, theta).`. Conversion from rectangular to polar coordinates: For the conversion of the coordinates of the points in the rectangular coordinates (x,y) to the polar coordinates (r,theta) the following relations are used,`r = sqrt (x^2+y^2)` ; `theta = tan^-1(y/x)`.Back to Top.he points in the polar coordinates are represented as `(r, theta).`. Conversion from rectangular to polar coordinates: For the conversion of the coordinates of the points in the rectangular coordinates (x,y) to the polar coordinates (r,theta) the following relations are used,