What is the primary function of the renal pelvis?

The primary function of the renal pelvis is to collect urine from the collecting ducts. The renal pelvis acts as a funnel that channels urine from the nephrons, which are the functional units of the kidneys, through the ureters and into the bladder. It is located at the central part of the kidney and serves as a reservoir for urine before it is excreted from the body. After urine is formed in the nephrons, it passes into the collecting ducts where it is concentrated and transported to the renal pelvis, highlighting its crucial role in the urinary system's overall function.