The renal pelvis is a funnel-shaped structure located in the kidney. It collects urine produced by the kidney and channels it into the ureter, which then transports the urine to the bladder for storage. The renal pelvis is an essential part of the urinary system, playing a crucial role in urine drainage. This structure is lined with a smooth muscle that helps propel urine through peristaltic movements. The renal pelvis can vary in size and shape among individuals, but its primary function remains the same: to serve as a conduit for urine from the kidneys to the urinary tract.