ATI RN
Urinary System Exam Questions Questions
Question 1 of 5
The loop of Henle is responsible for:
Correct Answer: B
Rationale: The loop of Henle concentrates urine via water (descending) and Na+ (ascending) reabsorption not filtration (glomerulus), hormones (endocrine), or digestion (gut). This defines its role, key for osmolarity, contrasting with other functions.
Question 2 of 5
Which hormone increases sodium retention and blood pressure?
Correct Answer: A
Rationale: Aldosterone retains Na+, raising BP not insulin (glucose), thyroxine (metabolism), or oxytocin (labor). This specifies RAAS role, key for volume control, contrasting with unrelated hormones.
Question 3 of 5
Podocytes
Correct Answer: D
Rationale: Podocytes have secondary processes (pedicels) contacting the basal lamina, form the visceral layer, and contain actin microfilaments all true. This comprehensively describes podocytes, key for filtration slits, contrasting with partial descriptions.
Question 4 of 5
Distal convoluted tubules is under the control of:
Correct Answer: D
Rationale: DCT responds to aldosterone (Na+/K+), ANF (Na+ excretion), and ADH (water) all apply. This encompasses hormonal regulation, key for electrolyte/water balance, contrasting with single or no control.
Question 5 of 5
Collecting duct
Correct Answer: D
Rationale: Collecting ducts have principal (light) and intercalated (dark) cells, respond to ADH, and concentrate urine all true. This fully describes their role, key for water balance, contrasting with partial traits.