2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/106635A model is proposed to minimize the total volume of the main distribution networks of fluids in organs such as the kidney and the lung. A consequence of the minimization analysis is that the optimal overall form of the organs is a modified ellipsoid. The variational procedure implementing this minimization is similar to the traditional isoperimetric theorems of geometry.5 pages, 4 figuresTissues and OrgansQuantitative Methodstext