ATI RN
Urinary System Exam Questions Questions
Question 1 of 5
Acidification of urine takes place in:
Correct Answer: C
Rationale: Urine acidification (H+ secretion) peaks in the collecting duct via intercalated cells not PCT, DCT, or ascending loop (diluting). This specifies pH regulation site, critical for acid-base, contrasting with earlier segments.
Question 2 of 5
Bicarbonate is maximally absorbed in:
Correct Answer: A
Rationale: PCT reabsorbs ~80-90% of filtered bicarbonate not DCT, collecting duct, or ascending loop (no HCO3- transport). This specifies primary reabsorption site, critical for acid-base, contrasting with later segments.
Question 3 of 5
Regarding Renal handling of water:
Correct Answer: B
Rationale: Water moves by osmotic diffusion throughout nephron (solute-driven) not PCT-only or ADH-controlled obligatory (PCT inherent). This defines water handling, critical for urine formation, contrasting with restricted or hormonal errors.
Question 4 of 5
Which of the following is the correct sequence in which urine flows through the kidney toward the urinary bladder?
Correct Answer: B
Rationale: Urine flows: papillary duct → minor calyx → major calyx → renal pelvis → ureter not other sequences. This orders drainage, key for urine path, contrasting with misordered flows.
Question 5 of 5
The location of the kidneys in relationship to the peritoneal lining of the abdominal cavity is referred to as
Correct Answer: A
Rationale: Kidneys are retroperitoneal (behind peritoneum) not retroabdominal, posterior (general), or dorsal. This positions kidneys, key for surgery, contrasting with vague terms.