Triiodothyronine (T3) is an active hormone synthesized in the thyroid. Thyroid is crucial for various physiological processes. Iodine inclusion is the main peculiarity of thyroid hormones. This feature plays a significant value in body development and metabolism. Specifically, T3 is engaged in the regulation of metabolism and energy allocation. Due to this feature, it influences almost all tissues in the body. The hormone is essential for the normal development of the central nervous system during growth. It also contributes to the maintenance of metabolic homeostasis in adults.
The thyroid gland stores large quantities of hormones. They can be produced in different body organs, including the liver, the brain, etc. The adenohypophysis regulates the amount of thyroid hormones in plasma. It uses Thyroid-Stimulating Hormone (TSH) and acts through negative feedback mechanisms. T4 (thyroxine) is the primary hormone produced by the thyroid gland. It is used to produce T3 by converting it into peripheral tissues.
