ATI RN
Urinary System Multiple Choice Questions Questions
Question 1 of 5
Important source of buffer in chronic metabolic acidosis?
Correct Answer: D
Rationale: Bone buffers in chronic metabolic acidosis releases CaCO₃ (e.g., weeks-long compensation). Phosphate is tubular less chronic. Proteins assist limited capacity. Bicarbonate depletes overwhelmed. Bone's role distinguishes it, key to chronic buffering, unlike acute or depleted systems.
Question 2 of 5
The process of urine formation includes:
Correct Answer: A
Rationale: Urine forms via filtration (glomerulus), reabsorption (tubules), and secretion (tubules) not digestive or GI processes. This outlines nephron function, critical for waste removal, contrasting with unrelated mechanisms.
Question 3 of 5
The normal pH of urine is:
Correct Answer: A
Rationale: Normal urine pH is ~6.0 (slightly acidic) not neutral, alkaline, or strongly acidic (pathological). This defines typical acidity, critical for urinalysis, contrasting with abnormal ranges.
Question 4 of 5
The amount of urine normally produced per day is approximately:
Correct Answer: C
Rationale: Normal urine output is 1-2 L/day not lower (oliguria) or higher (polyuria). This quantifies healthy production, critical for assessing function, contrasting with abnormal volumes.
Question 5 of 5
Podocytes are
Correct Answer: D
Rationale: Podocytes are visceral epithelial cells of Bowman's capsule, forming filtration slits not endothelial (capillaries), parietal (outer layer), or mesangial (support). This identifies their role in the filtration barrier, critical for GFR, contrasting with other glomerular cells.