ATI RN
Urinary System Multiple Choice Questions Questions
Question 1 of 5
In purine nucleus nitrogen atom at 1 position is derived from
Correct Answer: D
Rationale: In purine synthesis, nitrogen at position 1 comes from aspartate (via adenylosuccinate), not alanine, glutamate, or glycine (other positions). This distinguishes purine biosynthesis, critical for nucleotide metabolism, contrasting with amino acid roles.
Question 2 of 5
Pyonephrosis is defined as:
Correct Answer: A
Rationale: Pyonephrosis is pus-filled (suppurative) pyelonephritis with hydronephrosis (dilated pelvis), typically acute not chronic or non-suppurative. This distinguishes infectious obstruction, critical for urgent intervention, contrasting with chronicity.
Question 3 of 5
The site of origin of Randall plaques in idiopathic stone formers is
Correct Answer: C
Rationale: Randall plaques, linked to idiopathic calcium stones, originate at the basement membrane of thin loops of Henle calcium phosphate deposits form here, eroding into the papilla, nucleating stones. Proximal tubule handles reabsorption, not plaque formation wrong segment. Terminal collecting ducts manage urine concentration, not initial plaque sites distal process. Medullary interstitium surrounds tubules but isn't the precise origin too vague. Thin loop basement membrane's role distinguishes it, key to early stone pathogenesis in hypercalciuria, unlike other renal regions.
Question 4 of 5
In Emphysematous Pyelonephritis, the classic triad of symptoms include
Correct Answer: B
Rationale: Emphysematous pyelonephritis (gas-forming kidney infection) presents with fever, vomiting, and flank pain sepsis signs in diabetics. Loin mass isn't typical abscess rare. Haematuria occurs, but not triad-defining less consistent. Flank pain with mass/haematuria omits systemic fever/vomiting misses infection scope. Fever-vomiting-flank pain distinguishes this acute triad, key to its life-threatening nature, unlike mass or bleeding-focused errors.
Question 5 of 5
In the management of Erectile Dysfunction, Vacuum Erection Device is most advantageous for patients with
Correct Answer: A
Rationale: Vacuum erection devices (VED) excel in soft glans syndrome engorge glans via negative pressure, aiding rigidity. Post-priapism fibrosis limits VED efficacy poor response. Peyronie's curvature complicates device use painful. Veno-occlusive issues need outflow correction, not just VED less ideal. Soft glans benefit distinguishes VED, key to specific ED management, unlike fibrotic, curved, or outflow cases.