ATI RN
Urinary System Questions Questions
Question 1 of 5
The mesonephros extends in:
Correct Answer: D
Rationale: Mesonephros spans thoracic to upper lumbar regions not just cervical, thoracic, lumbar, or thoracic/lumbar only; 'all' includes cervical, which fits its cranial start. This broad extent (weeks 4–8) reflects its transient excretory role, key for development, contrasting with limited regions.
Question 2 of 5
The prostatic urethra is developed from:
Correct Answer: D
Rationale: Prostatic urethra forms from vesicourethral canal (upper), mesonephric ducts (mid), and pelvic sinus (lower) all contribute. 'All' fits mixed origin, critical for male anatomy, contrasting with partial sources.
Question 3 of 5
The kidneys aid in the activation of vitamin _____.
Correct Answer: B
Rationale: Kidneys activate vitamin D convert 25-hydroxy-D to calcitriol (e.g., calcium regulation). Vitamin A is liver-processed not kidney. Vitamin E is antioxidant not activated. Vitamin K is clotting-related liver role. Vitamin D's renal activation distinguishes it, critical for bone/mineral homeostasis, unlike other vitamins.
Question 4 of 5
The process of urination is called
Correct Answer: A
Rationale: Micturition is urination bladder emptying (e.g., reflex/voluntary). Mastication is chewing oral. Deglutition is swallowing digestive. Defecation is fecal rectal. Micturition's specificity distinguishes it, critical for urinary terminology, unlike digestive or fecal processes.
Question 5 of 5
How much fluid is filtered by the nephrons in one day?
Correct Answer: C
Rationale: Nephrons filter ~180 L/day GFR ~125 mL/min × 1440 min (e.g., normal adult). 10 L underestimates far too low. 100 L is half insufficient. 200 L overestimates exceeds typical. 180 L distinguishes it, critical for renal workload, unlike under/overestimates.