Definitions for "Renal pelvis"
A funnel-shaped structure that is formed at one end by the expanded upper portion of the ureter and at the other by the union of the calyxes of the kidney, which receive urine from the collecting ducts. Urine collected here is funnelled through to the ureter, to be collected in the bladder and then excreted.
The basin into which the urine formed by the kidneys is excreted before it travels to the ureters and bladder.
"Collecting funnel" deep within each kidney into which the kidney tubules drain filtrate.