ATI LPN
Urinary System Questions and Answers Questions
Question 1 of 5
When the urinary becomes stretched, there's an increase in the frequency of action potentials traveling from?
Correct Answer: A
Rationale: Bladder stretch from filling increases action potentials in afferent pelvic nerve fibers, traveling from the bladder to the sacral spinal cord (S2-S4). This initiates the micturition reflex. Parasympathetic (B) and somatic (C) neurons are efferent, and ascending pathways (D) follow later, making A the correct initial sensory pathway.
Question 2 of 5
A climber attempts an assault on a high mountain in the Andes and reaches an altitude of 5000 meters (16,400 ft) above sea level. What will happen to his arterial PCO2 and pH?
Correct Answer: B
Rationale: At high altitude (5000 m), low oxygen partial pressure triggers hyperventilation, reducing arterial PCOâ‚‚ (hypocapnia). Per Henderson-Hasselbalch, lower PCOâ‚‚ increases pH (respiratory alkalosis). Exertion may raise COâ‚‚ briefly, but hypoxia-driven ventilation dominates, ruling out C and D. A is close but less precise than B's directional clarity.
Question 3 of 5
It is hospital policy to assess and record a patient's heart rate before administering digoxin (Lanoxin). By auditing the nursing records to determine the frequency of compliance with this policy, the quality assessment and improvement committee is conducting:
Correct Answer: A
Rationale: Auditing compliance with heart rate checks before digoxin (to prevent bradycardia) is a process analysis (A), evaluating how well a procedure is followed. Quality analysis (B) is broader, system analysis (C) assesses infrastructure, and outcome analysis (D) focuses on results, making A the specific focus here.
Question 4 of 5
What statement by a nursing student demonstrates a correct understanding of how pathological factors affect urinary elimination?
Correct Answer: A
Rationale: Elevated parathyroid hormone increases calcium reabsorption, contributing to kidney stones (A), a correct pathological effect. Hypothyroidism slows metabolism (B), nephrotic syndrome loses proteins into urine (C), and acute kidney injury reduces output (D), making A the accurate understanding.
Question 5 of 5
Concerning angiotensin II:
Correct Answer: A
Rationale: The RAAS involves liver angiotensinogen, renal renin, and endothelial ACE (A, true), but angiotensin II, not just aldosterone, stimulates thirst/appetite (B is false), and AII increases sodium reabsorption (C, true). Only A is unequivocally correct—system components are accurate—while B is wrong and C is partial, making A the answer.