WGU D115 PATHO UNIT 6 RENAL AND UROLOGIC
SYSTEMS EXAM QUESTIONS & CORRECT ANSWERS
GRADED A+ 2025
Autoregulation of renal blood flow - correct answers prevents large
changes in GFR when there are increases/decreases in BP; regulated neural
and hormonal regulation
renin-angiotensin-aldosterone system - correct answers -decreased
blood pressure causes the juxtaglomerular cells of kidneys to secrete renin
which converts angiotensinogen (inactive) to angiotensin I (active) which is
then converted into angiotensin II by angiotensin-converting enzyme (ACE)
-Angiotensin II stimulates the adrenal cortex to secrete aldosterone
- leads to absorption of Na and increased blood pressure
-once blood pressure is restored, there is a decreased drive to stimulate
renin release
https://www.stuvia.com/user/Mboffin
,glomerular filtration - correct answers the movement of fluid and dilutes
across glomerular capillary membrane into the Bowman space
https://www.stuvia.com/user/Mboffin
, tubular reabsorption - correct answers Movement of fluids and solutes
from tubular lumen to the peritubular capillary plasma
tubular secretion - correct answers Transfer of substances from the
plasma of the peritubular to the tubular lumen, active and passive transport
Excretion - correct answers Elimination of a substance in the final urine
Aging and Renal System - correct answers Decrease: size of kidney, renal
blood flow, GFR, number and size of nephrons
Increase: glucose in urine, urgency, frequency, nocturia
Kidneys are less able to adapt to system changes
Creatinine - correct answers Substance produced by muscle, is measured
in plasma and urine to calculate a commonly used clinical estimate of GFR
https://www.stuvia.com/user/Mboffin
SYSTEMS EXAM QUESTIONS & CORRECT ANSWERS
GRADED A+ 2025
Autoregulation of renal blood flow - correct answers prevents large
changes in GFR when there are increases/decreases in BP; regulated neural
and hormonal regulation
renin-angiotensin-aldosterone system - correct answers -decreased
blood pressure causes the juxtaglomerular cells of kidneys to secrete renin
which converts angiotensinogen (inactive) to angiotensin I (active) which is
then converted into angiotensin II by angiotensin-converting enzyme (ACE)
-Angiotensin II stimulates the adrenal cortex to secrete aldosterone
- leads to absorption of Na and increased blood pressure
-once blood pressure is restored, there is a decreased drive to stimulate
renin release
https://www.stuvia.com/user/Mboffin
,glomerular filtration - correct answers the movement of fluid and dilutes
across glomerular capillary membrane into the Bowman space
https://www.stuvia.com/user/Mboffin
, tubular reabsorption - correct answers Movement of fluids and solutes
from tubular lumen to the peritubular capillary plasma
tubular secretion - correct answers Transfer of substances from the
plasma of the peritubular to the tubular lumen, active and passive transport
Excretion - correct answers Elimination of a substance in the final urine
Aging and Renal System - correct answers Decrease: size of kidney, renal
blood flow, GFR, number and size of nephrons
Increase: glucose in urine, urgency, frequency, nocturia
Kidneys are less able to adapt to system changes
Creatinine - correct answers Substance produced by muscle, is measured
in plasma and urine to calculate a commonly used clinical estimate of GFR
https://www.stuvia.com/user/Mboffin
