The Main Thyroid Hormone is _______

Question

The main thyroid hormone is _______.
A) ADH
B) oxytocin
C) thyroxine
D) ACTH

Accepted Answer

The main thyroid hormone is thyroxine, also known as T4. ADH (antidiuretic hormone) and oxytocin are produced by the pituitary gland, but they are not thyroid hormones. ACTH (adrenocorticotropic hormone) is produced by the pituitary gland to stimulate the adrenal glands, but it is also not a thyroid hormone.