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The renal medulla (100X)

Microimage
The renal medulla. Image copyright: University of Oslo, CC BY-NC-ND 4.0. (Tissue stain: H+E).

The renal medulla lies deeper within the kidney. It contains renal pyramids, which are triangular-shaped structures that play a role in the concentration of urine. Within the renal pyramids, you can find collecting ducts and loops of Henle. The renal pyramids empty into the renal calyx, which collects urine.

Published August 21st 2023, updated November 8th 2023.