What's Wrong With Timothy Endocrine System Part 2 5. The doctor didn’t mention cortisol, but it should also follow a similar feedback loop.

Sketch a feedback loop that includes the hypothalamus, pituitary, adrenal glands, and cortisol.

6. Why would a tumor on the pituitary gland affect the thyroid gland and also Tim’s levels of testosterone?

7. The pituitary gland is called the “master gland.” What other endocrine glands would have been affected by its malfunction?

8. Dr. Chapman suggested that Tim take a regimen of Human Chorionic Gonadotropin (HCG), which is analogous to luteinizing Hormone (LH) which is produced in the pituitary. Why would he recommend this? What problem could this potentially solve for Tim?

9. Do you think the original diagnosis was wrong? Why or why not?