Mineralocorticoids, including aldosterone, are able to maintain blood pressure during times of stress. Which of the following is not an effect of aldosterone?
Correct answer: A. Decreased blood sodium levels
- A. Decreased blood sodium levels
- B. Decreased urine sodium content
- C. Decreased blood potassium levels
- D. Increased blood pressure
Explanation
The mineralocorticoid aldosterone is stimulated by the renin-angiotensin system of the kidney when blood volume falls. Aldosterone acts at the distal convoluted tubule of the kidney to increase sodium reabsorption, thus raising sodium levels in the blood and lowering sodium levels in the urine. Aldosterone also increases potassium excretion, thus causing low levels of potassium in the blood. The overall retention of sodium draws water from the filtrate into the blood, causing increased blood pressure by increasing blood volume.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Chemical Coordination and Hormones
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
Practise Coordination and Control
1,687 free Coordination and Control MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Chemical Coordination and Hormones questions
Which steroid hormone, produced in the ovaries, is responsible for the growth of female sex organs and is responsible for causing a surge in luteinizing hormone through positive feedback?
After ingesting a meal heavy in polysaccharides, an individual has their blood drawn. Levels of which hormone would you expect to be higher than normal?
John goes to the doctor and is told that his anterior pituitary is not functioning. Which of the following hormones is likely at lower levels than normal?
Persons with diabetes mellitus have abnormally elevated blood glucose levels. In an attempt to rid the body of excess glucose, the kidneys filter the glucose into the urine for excretion. The amount of glucose in the urine overwhelms the kidneys, which are unable to reabsorb the glucose during concentration of the urine in the nephrons. What would be the blood volume status of a patient with uncontrolled diabetes mellitus?
All of the following are matched correctly EXCEPT
Regulates blood sugar levels