ANATOMY

Detailed explanation-1: -Thyroid hormones are made by the thyroid gland. The thyroid gland makes and releases two thyroid hormones: thyroxine (T4) and triiodothyronine (T3). The thyroid gland and the pituitary gland work together.

Detailed explanation-2: -Thyroxine (T4) is produced by the thyroid gland under regulation from the hypothalamus and pituitary gland. The feedback loop signals to the hypothalamus in to release thyrotropin-releasing hormone, which then stimulates the pituitary gland to release the thyroid stimulating hormone.

Detailed explanation-3: -The thyroid gland produces three hormones: Triiodothyronine, also known as T3. Tetraiodothyronine, also called thyroxine or T4.

Detailed explanation-4: -Thyrotropin [also known as thyroliberin and thyroid-stimulating hormone (TSH)] is a peptide released by the anterior pituitary gland that stimulates the thyroid gland to release thyroxine (Ladram et al., 1994).