ATI RN
Questions On The Urinary System Questions
Question 1 of 5
What signal causes the heart to secrete atrial natriuretic hormone?
Correct Answer: A
Rationale: Increased BP triggers ANP release not decreased BP or Na+ changes alone. This links pressure to natriuresis, critical for volume control, contrasting with low-pressure signals.
Question 2 of 5
The primary function of the descending loop of Henle in the kidney is?
Correct Answer: B
Rationale: Descending loop reabsorbs water osmotically not Na+, H+, or K+ (ascending/DCT). This specifies concentrating role, critical for gradient, contrasting with ion processes.
Question 3 of 5
Which of the following is not considered a loop diuretic?
Correct Answer: C
Rationale: Chlorthiazide is a thiazide not loop diuretic (others are). This distinguishes diuretic class, critical for pharmacology, contrasting with loop agents.
Question 4 of 5
Capillary hydrostatic pressure during filtration is built in the glomerulus as
Correct Answer: D
Rationale: Efferent arteriole's narrowness 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
Where are the podocytes located and what are they?
Correct Answer: B
Rationale: Podocytes are in the visceral layer of the glomerular capsule modified, branching epithelial cells forming filtration slits (e.g., pedicels) around capillaries. The proximal tubule has cuboidal cells reabsorption, not filtration. The distal tubule includes macula densa sensing, not epithelial. The collecting duct has principal/intercalated cells regulation, not filtration. Podocytes' location and structure distinguish them, key to glomerular filtration barrier, unlike tubular or regulatory cells.