ATI LPN
Urinary System Questions Questions
Question 1 of 5
The following factor(s) tend(s) to INCREASE the rate of glomerular filtration (GFR):
Correct Answer: D
Rationale: Sympathetic stimulation (A) constricts the afferent arteriole, reducing GFR; obstruction (B) increases capsular pressure, lowering GFR; and efferent vasodilation (C) decreases glomerular pressure, reducing GFR. None increase GFR—sympathetic effects lower it, obstruction opposes filtration, and efferent dilation reduces driving force—making D (none are correct) the answer.
Question 2 of 5
In the proximal convoluted tubule, chloride ions are reabsorbed because of:
Correct Answer: C
Rationale: Chloride follows sodium's active reabsorption in the PCT due to electrical attraction (C), maintaining charge balance. It's not actively transported (A), tied to calcium (B), or driven solely by osmosis (D), making C the mechanism.
Question 3 of 5
If MAP increased from 120 mmHg to 210 mmHg, GFR would most likely
Correct Answer: A
Rationale: Mean arterial pressure (MAP) rising from 120 to 210 mmHg increases glomerular hydrostatic pressure, boosting GFR (A), unless autoregulation fails beyond ~160 mmHg. Decrease (B) or no change (C) ignores pressure effects, making A likely.
Question 4 of 5
Urine with a high concentration of C₆Hâ‚â‚‚O₆ is:
Correct Answer: D
Rationale: C₆Hâ‚â‚‚O₆ (glucose) in urine (D) is abnormal (glycosuria) as it's filtered and reabsorbed, not secreted, unless the threshold is exceeded (e.g., diabetes). Normal (A, B) or secreted (C) options misalign, making D correct.
Question 5 of 5
A patient in the hospital has a history of functional urinary incontinence. Which nursing action will be included in the plan of care?
Correct Answer: A
Rationale: Functional incontinence from mobility/cognitive issues improves with a bedside commode (A) for easier access. Credé (B) and residuals (C) are for overflow, and Kegel (D) is for stress incontinence, making A the best action.