Multiple Choice
In kidney anatomy, what is a renal papilla?
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25. The Urinary System
The Kidneys
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In kidney anatomy, what is a renal papilla?
A
The outer granular region of the kidney that contains renal corpuscles and convoluted tubules
B
The apex of a renal pyramid that projects into a minor calyx and drains urine from collecting ducts
C
The funnel-shaped chamber that collects urine from the minor calyces and becomes the ureter
D
A cluster of capillaries within Bowman’s capsule that filters blood plasma
Verified step by step guidance1
Step 1: Understand the structure of the kidney, which includes the cortex (outer granular region), medulla (containing renal pyramids), and the collecting system (minor and major calyces, renal pelvis, ureter).
Step 2: Identify the renal papilla as a specific anatomical part of the renal pyramid, located at its apex (tip).
Step 3: Recognize that the renal papilla projects into a minor calyx, which is a small chamber that collects urine.
Step 4: Know that the renal papilla serves as the site where urine formed in the collecting ducts of the renal pyramid drains into the minor calyx.
Step 5: Differentiate the renal papilla from other structures such as the renal corpuscles (in the cortex), the funnel-shaped renal pelvis, and the glomerulus (capillary cluster in Bowman’s capsule).
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