ATI LPN
Urinary System Multiple Choice Questions and Answers PDF Questions
Question 1 of 5
What is the correct sequence of events?
Correct Answer: C
Rationale: In bicarbonate buffering, excess H⺠binds with HCO₃⻠to form H₂CO₃ (C), which then dissociates into CO₂ and H₂O (A), exhaled by lungs. This sequence neutralizes acid. HCO₃⻠isn't converted to H₂CO₃ first (B), and ‘all' (D) ignores order, making C the correct initial step.
Question 2 of 5
The student nurse is reviewing drugs that affect urinary elimination with the clinical preceptor. What statement made by the nurse would warrant further education by the clinical preceptor?
Correct Answer: C
Rationale: Calcium channel blockers typically reduce bladder contractility, potentially causing retention, not increased elimination (C), warranting education. Diuretics (A), anticholinergics (B), and alpha blockers (D) are correct, as they respectively increase output, reduce urgency, and improve flow, making C the inaccurate statement.
Question 3 of 5
Concerning the macula densa:
Correct Answer: D
Rationale: The macula densa senses NaCl delivery (A), signals renin release when low (B), triggering angiotensin II and aldosterone (C). All are true—NaCl sensing adjusts GFR, low delivery prompts renin, leading to systemic effects—making E (all are correct), reassigned as D, correct.
Question 4 of 5
A female client with an indwelling urinary catheter is suspected of having a urinary tract infection. Nurse Angel should collect a urine specimen for culture and sensitivity by:
Correct Answer: B
Rationale: Aspirating urine from the self-sealing port with a sterile needle after antiseptic wipe (B) ensures a fresh, uncontaminated sample from the catheter, ideal for accurate culture and sensitivity. Disconnecting tubing (A) risks contamination, drainage bag urine (C) is stagnant and unreliable, and clamping then aspirating (D) is unnecessary and risks backflow, making B the standard, sterile method.
Question 5 of 5
What type of epithelium forms the lining of the ureter? A) stratified squamous, B) transitional, C) simple ciliated columnar, D) simple cuboidal
Correct Answer: B
Rationale: The ureter is lined with transitional epithelium (B), accommodating urine passage. Stratified squamous (A) is in skin, ciliated columnar (C) in fallopian tubes, and cuboidal (D) in tubules, making B the lining.