PhysioEx 9.0 Quiz 6 Activity 1

Part A:

Which rat(s) was euthyroid without any injections?
   
a. The thyroidectomized rat
b. The normal rat and the hypophysectomized rat
c. The normal rat
d. The hypophysectomized rat

Part B:

An abnormally high level of which of the following will result in goiter?
   
a. thyroxine
b. TSH
c. either thyroxine or TRH
d. either TRH or TSH
e. TRH

Part C:

Why did the TSH have NO effect on the BMR of the thyroidectomized rat?
   
a. The rat is missing its pituitary gland.
b. The metabolism of the rat is already too low.
c. The metabolism of the rat is already too high.
d. The rat is missing its thyroid gland. 

Part D:

The injection of TSH resulted in goiter in _______.
   
a. The hypophysectomized rat
b. The normal rat
c. The normal rat and the hypophysectomized
d. The thyroidectomized rat

Part E:

Propylthiouracil injections resulted in goiter formation in _______.
   
a. The thyroidectomized rat
b. The normal rat and the hypophysectomized rat
c. The hypophysectomized rat
d. The normal rat