Each of the following statements concerning the ureter is true EXCEPT:

Correct Answer: C

Rationale: Ureter has transitional epithelium, two muscle layers above, three below, and a stellate lumen not a serosa (retroperitoneal). This corrects ureter anatomy, key for histology, contrasting with peritoneal structures.

Correct Answer: C

Rationale: Triamterene (K+-sparing) can reduce free water clearance, causing antidiuresis not loop (bumetanide), thiazide (chlorthalidone), or osmotic (urea). This distinguishes paradoxical effect, key for electrolyte therapy, contrasting with typical diuresis.

Correct Answer: D

Rationale: JG cells secrete renin and are in afferent arterioles not efferent, DCT (macula densa), or glomerulus. This specifies renin source, key for RAAS, contrasting with mislocations.

Correct Answer: D

Rationale: Urethra, ureter, and bladder are urinary; prostate is reproductive not urinary. This excludes non-urinary structures, key for system scope, contrasting with excretory components.

Correct Answer: B

Rationale: Male urethra has dual roles, bulbourethral input, three regions, and ~20 cm length, but two sphincters (internal/external) not one. This corrects anatomy, critical for continence, contrasting with true traits.