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renal pelvis

noun
1.
a small funnel-shaped cavity of the kidney into which urine is discharged before passing into the ureter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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renal pelvis in Medicine

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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for renal pelvis

enlarged upper end of the ureter, the tube through which urine flows from the kidney to the urinary bladder. The pelvis, which is shaped somewhat like a funnel that is curved to one side, is almost completely enclosed in the deep indentation on the concave side of the kidney, the sinus. The large end of the pelvis has roughly cuplike extensions, called calyces, within the kidney-these are cavities in which urine collects before it flows on into the urinary bladder.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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