The cup-like extensions of the renal pelvis that collect urine from the pyramids are called:

The cup-like extensions of the renal pelvis that collect urine from the pyramids are called:

• A. Papillae
• B. Medulla
• C. Cortex
• D. Calyces

Answer: (D)

The correct answer is calyces. The renal calyces are the cup-shaped structures that extend from the renal pelvis and serve to collect urine produced in the renal pyramids. Each renal pyramid in the medulla of the kidney releases urine into the minor calyces, which then converge to form major calyces, ultimately funneling urine into the renal pelvis where it is transported to the ureter. The renal medulla refers to the inner region of the kidney that contains the renal pyramids, while the cortex is the outer layer of the kidney. Papillae refer specifically to the pointed ends of the renal pyramids that project into the minor calyces but do not collect urine themselves, rather they release it into the calyces. Thus, calyces are the appropriate term for the structures that specifically collect urine from the pyramids, making this the correct answer.

The correct answer is calyces. The renal calyces are the cup-shaped structures that extend from the renal pelvis and serve to collect urine produced in the renal pyramids. Each renal pyramid in the medulla of the kidney releases urine into the minor calyces, which then converge to form major calyces, ultimately funneling urine into the renal pelvis where it is transported to the ureter.

The renal medulla refers to the inner region of the kidney that contains the renal pyramids, while the cortex is the outer layer of the kidney. Papillae refer specifically to the pointed ends of the renal pyramids that project into the minor calyces but do not collect urine themselves, rather they release it into the calyces. Thus, calyces are the appropriate term for the structures that specifically collect urine from the pyramids, making this the correct answer.