ATI RN
Questions On The Urinary System Questions
Question 1 of 5
Efferent arteriole open into;
Correct Answer: A
Rationale: Efferent arteriole feeds peritubular capillaries, not portal vein, arcuate vein, or all. This defines post-glomerular flow, key for reabsorption, contrasting with venous drainage.
Question 2 of 5
Which of the following statements concerning the kidneys is false?
Correct Answer: D
Rationale: Kidneys span T12-L3, not L3-L5 (false), while retroperitoneal, pyramids (8-15), and cortex/medulla are true. This corrects positioning, vital for anatomy, contrasting with true traits.
Question 3 of 5
The tuft of capillaries in the renal corpuscle is called the
Correct Answer: B
Rationale: Glomerulus is the capillary tuft in the corpuscle, not podocytes (cells), calyx (collecting), or pyramid (medulla). This defines filtration site, critical for GFR, contrasting with other terms.
Question 4 of 5
Which is incorrect regarding acute renal failure?
Correct Answer: C
Rationale: Acute tubulointerstitial nephritis isn't the most common renal ARF cause acute tubular necrosis (ATN) dominates (e.g., ischemia/toxins), incorrect. Pre-renal urea:creatinine rises hypoperfusion concentrates urea, true. Post-renal obstruction is less common e.g., stones rarer than ATN, accurate. Glomerulonephritis shows hematuria, pyuria, casts classic, correct. ATN's prevalence distinguishes the error, critical for ARF etiology, unlike true pre/post-renal or diagnostic statements.
Question 5 of 5
Which is the most likely organism to cause a UTI?
Correct Answer: B
Rationale: E. coli is the most likely UTI organism ~80% of uncomplicated cases (e.g., adheres via fimbriae), dominant in community settings. Staph saprophyticus ranks second young women, ~10-15%. Pseudomonas and Klebsiella occur in complicated UTIs hospitalized/catheterized, less common. E. coli's prevalence distinguishes it, key to UTI etiology, unlike secondary or nosocomial pathogens.