Relaxation of mesangial cells is responsible for
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
Absorption of glucose
Maintenance of blood flow
Osmotic gradient in medulla
Secretion of uric acid
Renal physiology