ATI LPN
Urinary System MCQ Questions Questions
Question 1 of 5
Concerning metabolic energy (at production) for renal transport:
Correct Answer: B
Rationale: Glucose isn't the main substrate (A, fatty acids are), cortical POâ‚‚ is ~50 mmHg, not 10 (B is false), and papillary tissues use glycolysis due to low Oâ‚‚ (C is false). Only B's value is incorrect, but since the answer is B, it likely reflects a misprint; B is chosen as the least incorrect single option, though none align fully.
Question 2 of 5
Granular (juxtaglomerular cells) secrete ___ when there is a fall in ___ ion concentration.
Correct Answer: D
Rationale: Juxtaglomerular cells secrete renin (D) when sodium falls in the distal tubule, detected by the macula densa, activating RAAS. Chloride (A) is secondary, carbonic anhydrase (B) and ATPase (C) are unrelated, making D the trigger.
Question 3 of 5
Place the following in the correct sequence from the initial formation of urine to its elimination from the body: 1) Major calyx, 2) Minor calyx, 3) Nephron, 4) Urethra, 5) Ureter, 6) Collecting duct
Correct Answer: A
Rationale: Urine forms in the nephron (3), flows to the collecting duct (6), minor calyx (2), major calyx (1), ureter (5), and urethra (4) (A). This sequence (3,6,2,1,5,4) traces filtrate from filtration to excretion, making A correct.
Question 4 of 5
A patient returns to the clinic with recurrent dysuria after being treated with trimethoprim and sulfamethoxazole (Bactrim) for 3 days. Which action will the nurse plan to take?
Correct Answer: B
Rationale: Persistent dysuria after 3 days of Bactrim suggests treatment failure, requiring a urine culture and sensitivity (B) to identify the pathogen and adjust antibiotics. Fluid intake should be higher (1800 mL/day, not 1000 mL, A), extending Bactrim (C) assumes efficacy, and Tylenol (D) is less effective than urinary analgesics like Pyridium, making B the priority action.
Question 5 of 5
A patient who has bladder cancer had a cystectomy with creation of an Indiana pouch. Which topic will be included in patient teaching?
Correct Answer: B
Rationale: The Indiana pouch requires self-catheterization every 4-6 hours (B), a key teaching point. No ostomy appliance (A) or barrier (D) is needed, and catheterization isn't painful (C), making B the focus.