renal pyramid


Definition of renal pyramid 


: any of the somewhat triangular- or wedge-shaped masses of tissue of the inner medulla (see medulla sense 2a) region of the kidney that project as the renal papillae into the renal pelvis, and have a striated appearance due to the presence of collecting tubules and collecting ducts

First Known Use of renal pyramid

1861, in the meaning defined above

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renal pyramid


Medical Definition of renal pyramid 

: any of the conical masses that form the medullary substance of the kidney, project as the renal papillae into the renal pelvis, and are made up of bundles of straight uriniferous tubules opening at the apex of the conical mass

called also Malpighian pyramid

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