Compare the renal pyramids and renal papilla of the human kidney with those of a cat?

The renal pyramids in both humans and cats are triangular structures located in the renal medulla, involved in urine formation by concentrating urine and collecting filtrate from the nephrons. However, cats typically have more pronounced and numerous pyramids due to their evolutionary adaptation to different environmental needs. The renal papilla, which is the tip of the renal pyramid that drains urine into the minor calyx, is also similar in structure between the two species but may vary slightly in size and shape. Overall, while the basic anatomy and function are conserved, variations reflect the differing urinary adaptations in humans and cats.