Podcast
Questions and Answers
What is the main physiological impact of antidiuretic hormone (ADH) and aldosterone on the kidney?
What is the main physiological impact of antidiuretic hormone (ADH) and aldosterone on the kidney?
- Increase water reabsorption (correct)
- Decrease potassium secretion
- Increase urea concentration
- Increase sodium excretion
Which hormone controls aldosterone secretion and sodium balance by its effect on renal blood flow?
Which hormone controls aldosterone secretion and sodium balance by its effect on renal blood flow?
- Antidiuretic hormone (ADH)
- Insulin
- Plasma volume (correct)
- Natriuretic peptides
What stimulates thirst center to increase intake in response to a rise in extracellular osmolality?
What stimulates thirst center to increase intake in response to a rise in extracellular osmolality?
- Stimulation of renin–angiotensin system
- Increase in aldosterone levels
- Rise in extracellular osmolality (correct)
- Decrease in ADH secretion
How does a rise in extracellular osmolality affect water loss and intake?
How does a rise in extracellular osmolality affect water loss and intake?
Which system experiences a very large increase in activity to stimulate thirst in response to a rise in extracellular osmolality?
Which system experiences a very large increase in activity to stimulate thirst in response to a rise in extracellular osmolality?
In normal subjects, what is the main factor affecting ADH secretion?
In normal subjects, what is the main factor affecting ADH secretion?
What is the enzyme responsible for splitting off a decapeptide from a circulating 2-globulin to form angiotensin I?
What is the enzyme responsible for splitting off a decapeptide from a circulating 2-globulin to form angiotensin I?
Where is angiotensin-converting enzyme (ACE) predominantly located?
Where is angiotensin-converting enzyme (ACE) predominantly located?
Which enzyme is the target of ACE inhibitors used to treat hypertension and congestive cardiac failure?
Which enzyme is the target of ACE inhibitors used to treat hypertension and congestive cardiac failure?
What biological action does angiotensin II have that contributes to maintaining blood pressure?
What biological action does angiotensin II have that contributes to maintaining blood pressure?
Which cellular complex secretes renin in response to a reduction in renal artery blood flow?
Which cellular complex secretes renin in response to a reduction in renal artery blood flow?
What effect does angiotensin II have on the thirst center in the brain?
What effect does angiotensin II have on the thirst center in the brain?
What is the role of angiotensin II in response to poor renal blood flow?
What is the role of angiotensin II in response to poor renal blood flow?
How does aldosterone affect the reabsorption of Na+ in the distal renal tubules?
How does aldosterone affect the reabsorption of Na+ in the distal renal tubules?
What is the primary stimulus for aldosterone secretion?
What is the primary stimulus for aldosterone secretion?
What is the role of natriuretic peptides in response to high sodium levels?
What is the role of natriuretic peptides in response to high sodium levels?
What is the main effect of ACE inhibitors in the context of the renin-angiotensin system?
What is the main effect of ACE inhibitors in the context of the renin-angiotensin system?
How does ANP oppose sodium retention and arterial pressure elevation?
How does ANP oppose sodium retention and arterial pressure elevation?
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