In this experiment, specific hormones were given to two different rats, one with

Question

In this experiment, specific hormones were given to two different rats, one with testes, and one that was castrated. 6 tables like the one shown below were given and we had to figure out which hormone was given to the rats. There were 6 hormones in all.

To find this, we used the equation

Once we found the results, all hormones but TRH increased the size of the pituitary gland. The other hormones were cortisol, TSH, LH, testosterone, ACTH.

With that being said, Which of the following best explains this observation?

A) the administered hormones were inhibiting pituitary gland function

B) the pituitary gland was recieving no stimulation from the hypothalamus

C) pituitary gland function is dependent on positive feedback from target organ hormones

D) Without continuour stimulation by testosterone, the pituitary gland atrophies

Explanation / Answer

c. pituitary gland function is dependent on positive feedback from target targe hormones.

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