Endocrine system

ACTIVITY 1:  Metabolism and Thyroid Hormones – Part 1

1.   The baseline metabolic rate (BMR) of the normal rat was approximately ________ ml O2/kg/hr.

2.   True or False:  The BMR of all three rats was approximately the same before treatment with thyroxine, TSH, or propylthiouracil.     

3.   Which rat had the fastest basal metabolic rate (BMR)?

4.    Why did the BMR’s differ between the normal rat and the surgically altered rats?

5.   If an animal had been thyroidectomized, what hormone(s) would be missing in its blood?

6.   If an animal had been hypophysectomized, what effect(s) would you expect to see in the hormone levels in its blood and in its BMR?