What Is the Function of the Renal Pelvis? What Is the Function of the Renal Pelvis? What Is the Function of the Renal Pelvis? What Is the Function of the Renal Pelvis? What Is the Function of the Renal Pelvis? What Is the Function of the Renal Pelvis? What Is the Function of the Renal Pelvis? What Is the Function of the Renal Pelvis?