<prompt> Laplaces law for cylinder?P TR PT 1rl - lr2P 2TRP TRNone of the above  <response>: Ans. c P TR Ref. Ganong Physiology 22nd584LAPLACES LAW states that wall tension T is proportional to the product of intraventricular pressure P and ventricular radius r.---T. p.r P 2TR... IN A SPHERE BECAUSE R1R2. P Tr... In a Cylinder like blood vessel one radius is infinite.Wall Tension: Law of LaolaceT p x r Tension T in wall pressure and radius - tensionApplicationsArterial aneurysm: Weak wall balloons Vessel radius , causing wall tension Tension causes radius vicious cycle, increasing risk of ruptureDilated heart failure: ventricular volume- ventricular radius, which in turn causes t wall tension Dilated ventricle must work harder than normal heart 