which thyroid hormone is released in greatest quantity
The primary function of your thyroid gland is to secrete thyroid hormones, which are responsible for controlling your bodyâs metabolism. The 2 main thyroid hormones are T3 (triiodothyronine) and T4 (thyroxine).The amount of thyroid hormones secreted is controlled by another hormone, called thyroid stimulating hormone (TSH), which is released from the pituitary gland in your head.he primary function of your thyroid gland is to secrete thyroid hormones, which are responsible for controlling your bodyâs metabolism. The 2 main thyroid hormones are T3 (triiodothyronine) and T4 (thyroxine).