<prompt> Relaxation of mesangial cells is responsible forAbsorption of glucoseMaintenance of blood flowOsmotic gradient in medullaSecretion of uric acid  <response>: Mesangial cells are specialized cells around blood vessels in the kidneys, at the mesangium. They are specialized smooth muscle cells that function to regulate blood flow through the capillaries,Ref: Ganong;s review of medical physiology; 24th edition; page no: 673 