Question

the renal papilla empties urine into the: a renal pelvis. b calyx. c nephron. d ureter.

Explanation:

The renal papilla is the tip of the renal pyramid. Urine is collected from the collecting ducts at the renal papilla and empties into the calyx. The calyx then drains into the renal pelvis, which leads to the ureter. The nephron is the functional unit of the kidney where urine formation begins, but the renal papilla does not empty into it.

Answer:

B. calyx