The right atrium secretes atrial natriuretic hormone (ANH), which stimulates the kidneys to excrete salt and water into the urine. ANH acts antagonistically to what other hormone?
A. cortisol
B. aldosterone
C. glucagon
D. thyroxine
E. progesterone
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about hormones? What other information is related to the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
B. aldosterone
Clarify Question
What is the key concept addressed by the question?
· Which hormone acts as an antagonist to the effects of atrial natriuretic hormone?
What type of thinking is required?
o This is an analyze question because you have to consider how one hormone stimulates opposite reactions of another hormone.
Gather Content
What do you already know about hormones? What other information is related to the question?
· Atrial natriuretic hormone (ANH) stimulates the kidneys to excrete salt and water into the urine. The ultimate effect of this would be a reduction in blood volume and decreased blood pressure. Aldosterone increases blood pressure by promoting salt and water retention, the opposite action of ANH
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
· As aldosterone has the opposite effects of ANH, this must be the correct answer. Cortisol is involved in long-term stress responses. Glucagon promotes the release of glucose into the blood stream. Thyroxine regulates metabolism. Progesterone completes preparation for pregnancy.
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
· Answering this question correctly depended upon understanding the function of hormone-receptor binding and realizing that some hormones can cross the cell membrane while others cannot. If you got the answer correct, wonderful! If not, which answer did you choose? Were you unclear on the roles of some of these hormones? Did you forget that aldosterone increases blood pressure by promoting salt and water retention?
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