ATI RN
Questions On The Urinary System Questions
Question 1 of 5
The hyperosmolarity of renal medulla is due to increase content of:
Correct Answer: D
Rationale: Medullary hyperosmolarity arises from Na+ and urea (countercurrent), not glucose or K+ alone. This defines concentration gradient, critical for urine concentration, contrasting with single solutes.
Question 2 of 5
With respect to glomerular filtration:
Correct Answer: A
Rationale: Glomerular filtration is passive ultrafiltration not unaffected by RBF (affects pressure) or 137 L/min (180 L/day). This corrects filtration mechanics, critical for GFR, contrasting with rate or flow errors.
Question 3 of 5
The kidneys are:
Correct Answer: D
Rationale: Kidneys regulate blood volume (water balance), pressure (RAAS), and pH (H+ excretion) all apply. This encompasses renal functions, vital for homeostasis, contrasting with single roles.
Question 4 of 5
The micturition reflex center is located in the:
Correct Answer: C
Rationale: Micturition reflex centers in sacral cord (S2-S4) not kidney, cerebrum, bladder, or hypothalamus. This locates reflex control, key for voiding, contrasting with higher/organ sites.
Question 5 of 5
Diabetes insipidus or diabetes mellitus would most likely be indicated by ________.
Correct Answer: B
Rationale: Polyuria (excess urine) marks diabetes insipidus (ADH lack) and mellitus (glucose diuresis) not anuria (none), oliguria (low), or none. This links conditions to output, key for diagnosis, contrasting with reduced flow.