TSH Essay Questions
1. Which rat, A, B or C has no thyroid gland? Rat A (1 pts)
2. Justify your answer. (what data convinced you of your answer) (1 pts)
T3 and T4 regulate the metabolism, so when more is available it increases the baseline metabolic rate. TSH causes the release of T3 and T4, so if the rat is injected with TSH, in theory we would suggest that the levels of T3 and T4 are also higher than the baseline metabolic rate.
3. In a further experiment, all 3 rats were given a drug that inhibits the production of thyroid hormone. Be sure to state the rationale for your answer. (1 pt. for correct effect, 1 pt. for the rationale)
a. What effect would this drug have on the normal rat’s metabolic rate? Explain. (2pts.)
If the normal rate is injected
2. Justify your answer. (what data convinced you of your answer) (1 pts)
T3 and T4 regulate the metabolism, so when more is available it increases the baseline metabolic rate. TSH causes the release of T3 and T4, so if the rat is injected with TSH, in theory we would suggest that the levels of T3 and T4 are also higher than the baseline metabolic rate.
3. In a further experiment, all 3 rats were given a drug that inhibits the production of thyroid hormone. Be sure to state the rationale for your answer. (1 pt. for correct effect, 1 pt. for the rationale)
a. What effect would this drug have on the normal rat’s metabolic rate? Explain. (2pts.)
If the normal rate is injected