Renal pelvis

a small funnel-shaped cavity of the kidney into which urine is discharged before passing into the ureter

renal pelvis n.
A hollow flattened funnel-shaped expansion of the upper end of the ureter into which urine is discharged before entering the ureter.


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    renal pyramid n. Any of various pyramidal masses that are seen upon longitudinal section of the kidney and that contain part of the secreting tubules and the collecting tubules. Also called malpighian pyramid, medullary pyramid.

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