1
Bio
BIO 669 QUIZ 6 EXAM (NEW 2024/ 2025
UPDATE) QUESTIONS & VERIFIED ANSWERS|
GRADE A| 100% CORRECT
What hormones affect the GFR and renal blood flow? - ANS ✓renin-
angiotensin- aldosterone system= renin
Natriuretic peptides
How does renin affect GFR and renal blood flow? - ANS ✓triggered by
decrease in BP, decreased nacl concentration, stimulation of B-adrenergic
receptors, and release of prostaglandins
Decreases sodium loss via reabsorption= increased fluid volume, also
vasoconstricts and thereby increases pressure. (think aldosterone release
due to the renin)
How do natriuretic peptides affect GFR and Renal blood flow? - ANS
✓opposes aldosterone: increasing sodium and water=decreasing fluid volume
and also vasodialates= decreased pressure
Bio 669
, 2
Bio
What does urodilantin do? - ANS ✓increases renal blood flow= diuresis.
What does glomerular filtration do? - ANS ✓produces cell and protein free
filtrate
What is the countercurrent exchange system? - ANS ✓Vasa Recta
Contributes to production of concentrated urine
Creates concentration gradient
What are the 3 different types of natriuretic peptides? - ANS ✓atrial, brain,-
stimulate sodium release into urine and decreasing overall plasma volume.
C-type (endothelial cells, vasodilation in nephron)
Urodilantin- affects DCT and collecting ducts= vasodilation and can lead to
natriuresis
What does diuretic hormone do? - ANS ✓increases urine output
What does aldosterone do? - ANS ✓stimulates reabsorption of sodium (which
intern=reabsorbs water)
Increases potassium and hydrogen excretion.
Bio 669
, 3
Bio
What does antidiuretic hormone do? - ANS ✓controls final concentration of
urine, increase h20 permeability and reabsorption
What are osmotic diuretics? - ANS ✓freely filtered but not reabsorbed,
osmotically attracts water and diminishes sodium retention
Synthetic- mannitol= rapid diuresis
What do loop diuretics do? - ANS ✓affects loop of henle,
Gets rid of sodium and potassium
What are Aldosterone inhibitors? - ANS ✓potassium sparing- lose sodium but
retain potassium
What are aquaretics? - ANS ✓blocks the action of the antidiuretic hormone
What alcohol does= lots of pee that is dilute and can dehydrate you.
What are renal hormones? - ANS ✓vitamin D and erythropoietin
What is the relationship between the kidneys and vitamin D? - ANS ✓for
vitamin D to be active it needs 2 hydrogens. 1 of these hydrogens is in the
kidneys.
Bio 669
Bio
BIO 669 QUIZ 6 EXAM (NEW 2024/ 2025
UPDATE) QUESTIONS & VERIFIED ANSWERS|
GRADE A| 100% CORRECT
What hormones affect the GFR and renal blood flow? - ANS ✓renin-
angiotensin- aldosterone system= renin
Natriuretic peptides
How does renin affect GFR and renal blood flow? - ANS ✓triggered by
decrease in BP, decreased nacl concentration, stimulation of B-adrenergic
receptors, and release of prostaglandins
Decreases sodium loss via reabsorption= increased fluid volume, also
vasoconstricts and thereby increases pressure. (think aldosterone release
due to the renin)
How do natriuretic peptides affect GFR and Renal blood flow? - ANS
✓opposes aldosterone: increasing sodium and water=decreasing fluid volume
and also vasodialates= decreased pressure
Bio 669
, 2
Bio
What does urodilantin do? - ANS ✓increases renal blood flow= diuresis.
What does glomerular filtration do? - ANS ✓produces cell and protein free
filtrate
What is the countercurrent exchange system? - ANS ✓Vasa Recta
Contributes to production of concentrated urine
Creates concentration gradient
What are the 3 different types of natriuretic peptides? - ANS ✓atrial, brain,-
stimulate sodium release into urine and decreasing overall plasma volume.
C-type (endothelial cells, vasodilation in nephron)
Urodilantin- affects DCT and collecting ducts= vasodilation and can lead to
natriuresis
What does diuretic hormone do? - ANS ✓increases urine output
What does aldosterone do? - ANS ✓stimulates reabsorption of sodium (which
intern=reabsorbs water)
Increases potassium and hydrogen excretion.
Bio 669
, 3
Bio
What does antidiuretic hormone do? - ANS ✓controls final concentration of
urine, increase h20 permeability and reabsorption
What are osmotic diuretics? - ANS ✓freely filtered but not reabsorbed,
osmotically attracts water and diminishes sodium retention
Synthetic- mannitol= rapid diuresis
What do loop diuretics do? - ANS ✓affects loop of henle,
Gets rid of sodium and potassium
What are Aldosterone inhibitors? - ANS ✓potassium sparing- lose sodium but
retain potassium
What are aquaretics? - ANS ✓blocks the action of the antidiuretic hormone
What alcohol does= lots of pee that is dilute and can dehydrate you.
What are renal hormones? - ANS ✓vitamin D and erythropoietin
What is the relationship between the kidneys and vitamin D? - ANS ✓for
vitamin D to be active it needs 2 hydrogens. 1 of these hydrogens is in the
kidneys.
Bio 669
