Calculate and plot the radial and circumferential stress distribution in the left ventricle at the end of systole (P-80mmHg, assume that the ventricle is a spherical shell). The inner radius of the heart is 3.2cm and the outer radius of the heart is 3.8cm. The external pressure surrounding the heart is negative 1mmHg. Under a disease condition where the heart muscle thickens, calculate the radial and circumferential stress distribution in the left ventricle at the end of systole and at peak systole. Under these conditions the pressure remains the same but the inner wall radius is 3cm and the outer wall radius is 4.2cm. Compare this to normal conditions and comment. 2.