ATI RN
Urinary System Test Questions And Answers Questions
Question 1 of 5
Tubular re-absorption occurs from the nephron tubules into the
Correct Answer: B
Rationale: Reabsorption moves solutes from tubules to peritubular capillaries, not loop (site), corpuscle (filtration), or pyramid (structure). This defines reabsorption pathway, key for reclaiming substances, contrasting with filtration sites.
Question 2 of 5
Uric acid results from metabolism.
Correct Answer: C
Rationale: Uric acid arises from purine (nucleotide) breakdown, not protein (urea), carbohydrate, or pyrimidine. This specifies metabolic source, key for gout, contrasting with other pathways.
Question 3 of 5
The mucosa of the bladder is comprised of
Correct Answer: C
Rationale: Bladder mucosa is transitional epithelium, adapting to stretch, not smooth muscle (wall), squamous, or columnar (glands). This specifies bladder lining, key for expansion, contrasting with other epithelia.
Question 4 of 5
The countercurrent multiplier mechanism occurs at the
Correct Answer: B
Rationale: Countercurrent multiplier in the loop of Henle concentrates urine, not PCT, DCT, or collecting ducts (ADH effect). This locates concentration mechanism, key for osmolarity, contrasting with other segments.
Question 5 of 5
Kidneys in the human body extend from this level
Correct Answer: D
Rationale: Kidneys span T12 to L3, not higher thoracic or extended lumbar ranges. This specifies vertebral location, vital for radiology, contrasting with incorrect spans.