QuestionMay 28, 2025

3 An injection of thyroxine to an otherwise normal rat will cause which of the following? development of a goiter hyperthyroidism high levels of TSH secretion high levels of TRH secretion Select View Experiment Results if you need to review your results from the Experiment to answer a question. After completing the Post-lab Quiz, you can view your results in the Lab Report.

3 An injection of thyroxine to an otherwise normal rat will cause which of the following? development of a goiter hyperthyroidism high levels of TSH secretion high levels of TRH secretion Select View Experiment Results if you need to review your results from the Experiment to answer a question. After completing the Post-lab Quiz, you can view your results in the Lab Report.
3 An injection of thyroxine to an otherwise normal rat will cause which of the following?
development of a goiter
hyperthyroidism
high levels of TSH secretion
high levels of TRH secretion
Select View Experiment Results if you need to review your results from the Experiment to answer a
question.
After completing the Post-lab Quiz, you can view your results in the Lab Report.

Solution
4.5(108 votes)

Answer

Hyperthyroidism Explanation 1. Understand Thyroxine's Effect Thyroxine increases metabolism and mimics hyperthyroidism symptoms. 2. Analyze Hormonal Feedback High thyroxine levels decrease TSH and TRH due to negative feedback. 3. Determine Goiter Development Goiters develop from high TSH, which is not present with thyroxine injection.

Explanation

1. Understand Thyroxine's Effect<br /> Thyroxine increases metabolism and mimics hyperthyroidism symptoms.<br /><br />2. Analyze Hormonal Feedback<br /> High thyroxine levels decrease TSH and TRH due to negative feedback.<br /><br />3. Determine Goiter Development<br /> Goiters develop from high TSH, which is not present with thyroxine injection.
Click to rate: