- Dec 18, 2001
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http://www.endocrineweb.com/conditions/thyroid/how-your-thyroid-works
Hypothalamus -> (TRH) -> { Pituitary -> (Thyrotropin:TSH) -> {{ (Iodine+Tyrosine) -> Thyroid -> (Thryoxine:T4, Triiodothyronine:T3) [controls cellular metabolism] }} }

The thyroid is situated just below your "Adams apple" or larynx. During development (inside the womb) the thyroid gland originates in the back of the tongue, but it normally migrates to the front of the neck before birth.
The thyroid gland is under the control of the pituitary gland,
...
The pituitary gland itself is regulated by another gland, known as the hypothalamus
Hypothalamus -> (TRH) -> { Pituitary -> (Thyrotropin:TSH) -> {{ (Iodine+Tyrosine) -> Thyroid -> (Thryoxine:T4, Triiodothyronine:T3) [controls cellular metabolism] }} }
