Podcast
Questions and Answers
What is the primary role of aldosterone in the human body?
What is the primary role of aldosterone in the human body?
- Promoting Na+ and water retention, and lowering plasma K+ concentration (correct)
- Regulating body temperature
- Stimulating the release of insulin
- Regulating blood glucose levels
Which hormone is directly responsible for stimulating the release of aldosterone in response to decreased blood pressure?
Which hormone is directly responsible for stimulating the release of aldosterone in response to decreased blood pressure?
- Renin (correct)
- Adrenoglomerulotropin
- ACTH
- Insulin
Which cells in the kidney nephron are primarily targeted by aldosterone to promote Na+ and water retention?
Which cells in the kidney nephron are primarily targeted by aldosterone to promote Na+ and water retention?
- Podocytes
- Mesangial cells
- Principal cells of the distal tubule and collecting duct (correct)
- Parietal cells
Which of the following is NOT a member of the mineralocorticoid class?
Which of the following is NOT a member of the mineralocorticoid class?
Which of the following factors has only a minor role in regulating aldosterone production?
Which of the following factors has only a minor role in regulating aldosterone production?
Atrial natriuretic peptide (ANP) increases pressure in the glomerular capillaries, leading to a decrease in the glomerular filtration rate (GFR).
Atrial natriuretic peptide (ANP) increases pressure in the glomerular capillaries, leading to a decrease in the glomerular filtration rate (GFR).
ANP inhibits renin secretion, thus suppressing the renin-angiotensin-aldosterone system.
ANP inhibits renin secretion, thus suppressing the renin-angiotensin-aldosterone system.
A decrease in sodium reabsorption in the distal convoluted tubule and cortical collecting duct of the nephron leads to decreased excretion of sodium and water.
A decrease in sodium reabsorption in the distal convoluted tubule and cortical collecting duct of the nephron leads to decreased excretion of sodium and water.
Arginine vasopressin (AVP) primarily functions to promote water retention and vasodilation.
Arginine vasopressin (AVP) primarily functions to promote water retention and vasodilation.
Reduction in aldosterone secretion by the adrenal cortex leads to decreased sodium reabsorption in the distal tubule and cortical collecting duct.
Reduction in aldosterone secretion by the adrenal cortex leads to decreased sodium reabsorption in the distal tubule and cortical collecting duct.
