Which structure in the kidney is made up of pyramids and calyces, whose function is to collect urine and transport it into the renal pelvis?
1. A.
2. B.
3. C.
4. D.
Correct Answer: 3
The renal medulla is composed of structures called pyramids and calyces. The pyramids are wedge like structures made up of bundles of urine-collecting tubules. At their apex, the pyramids have papillae that are enclosed by cuplike structures called calyces. The calyces collect urine and transport it into the renal pelvis, which is the funnel-shaped superior end of the ureter.
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