Question detail
Which of the following best describes the feedback mechanism for thyroxine regulation?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Hormonal coordination in humans
Question
- A. Positive feedback
- B. Negative feedback
- C. Direct feedback
- D. Hormonal feedback
Answer
Negative feedback
Explanation
Thyroxine regulation is controlled by negative feedback, where the output of a system suppresses its own production to maintain homeostasis.
Common mistake
Thyroxine Control Confusion
Students often confuse the role of thyroxine in metabolism with its regulation by negative feedback, thinking it only increases metabolism without understanding the feedback mechanism.
To fix this, students should focus on how thyroxine levels are monitored by the hypothalamus and pituitary gland, and how an increase in thyroxine leads to a decrease in TSH production, illustrating the negative feedback loop.
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