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The thyroid gland produces two thyroid hormones,
triiodothyronine (T3) and thyroxine (T4), and releases them as needed by the
body. The hypothalamus and the pituitary gland help control the thyroid gland.
The hypothalamus produces thyrotropin-releasing hormone (TRH), which stimulates
the pituitary gland to release thyroid-stimulating hormone (TSH). A low level of
T3 tells the hypothalamus to release more TRH, and it tells the pituitary to release more
TSH. The thyroid gland releases T3 and T4 until the body is receiving the
ByHealthwise StaffPrimary Medical ReviewerKathleen Romito, MD - Family MedicineSpecialist Medical ReviewerMatthew I. Kim, MD - Endocrinology
Current as ofNovember 14, 2014
Current as of:
November 14, 2014
Kathleen Romito, MD - Family Medicine & Matthew I. Kim, MD - Endocrinology
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