ATI RN
Multiple Choice Questions On Urinary System Questions
Question 1 of 5
The striated appearance of the pyramids is caused by
Correct Answer: A
Rationale: Parallel vasa recta/loop of Henle cause pyramid striations, not microtubules, connective tissue, or nerves. This explains medullary appearance, vital for countercurrent, contrasting with other tissues.
Question 2 of 5
Which blood vessel delivers blood to the cortex?
Correct Answer: A
Rationale: Interlobular arteries branch from arcuate to supply cortex, not interlobar (medulla), arcuate (boundary), or efferent (glomerulus). This specifies cortical supply, vital for nephron function, contrasting with other vessels.
Question 3 of 5
Eating large amounts of meat will increase the levels of in the blood.
Correct Answer: C
Rationale: Meat (protein) raises blood urea from amino acid breakdown, not protein (intact), creatinine (muscle), or uric acid (purine). This identifies nitrogenous waste, vital for metabolism, contrasting with other markers.
Question 4 of 5
Capillary hydrostatic pressure during filtration is built in the glomerulus as
Correct Answer: D
Rationale: Efferent arteriole's narrowness (vs. afferent) raises glomerular pressure, not Bowman's size/shape or afferent narrowness. This explains filtration pressure, key for GFR, contrasting with structural myths.
Question 5 of 5
renal cortex is :
Correct Answer: A
Rationale: Renal cortex is the outer layer, not inner (medulla), lateral, or medial (positional). This locates cortex, vital for glomeruli, contrasting with medullary depth.