Final answer:
The renal pelvis is the hollow space of the kidney that connects to a ureter, situated at the renal hilum where various structures including blood vessels and nerves assemble.
Step-by-step explanation:
The hollow space of the kidney that junctions with a ureter is known as the renal pelvis. This funnel-shaped structure is located at the hilum of each kidney, where it is formed by the merging of the major and minor calyces. The renal pelvis collects urine from the calyces and narrows into the ureter, which carries urine to the urinary bladder through peristalsis. The process of urine collection and transportation is facilitated by the renal hilum, a recessed region in the medial aspect of the kidney where blood vessels, nerves, lymphatics, and the ureter converge. The renal hilum allows the renal arteries to bring blood to the kidney and renal veins to return cleansed blood to the circulation system. The orderly anatomical arrangement within the hilum is vital for the kidney's filtrating and excretory functions.