Final answer:
The renal pyramids in the renal medulla taper into renal papillae, where urine is emptied into the minor calyces.
Step-by-step explanation:
The renal medulla contains renal pyramids, which are cone-shaped tissues in the kidney. These pyramids taper into renal papillae, which are the medullary areas where collecting ducts empty urine into the minor calyces. The renal pyramids and renal papillae are part of the internal anatomy of the kidney, specifically the medulla. They play an important role in the excretion of urine.