When one burns wood or coal to produce heat, toxins are released in the form of smoke. The same happens when your body burns food for energy. This process is called metabolism and the toxic molecules produced as a result are called free radicals.
hormones, thyrotropic (thyroid-stimulating hormone [TSH]), n a pituitary hormone that regulates the growth and activity of the thyroid gland.ormones, thyrotropic (thyroid-stimulating hormone [TSH]), n a pituitary hormone that regulates the growth and activity of the thyroid gland.
Thyroxine. (3,5,3â,5â,-tetraiodothyronine), the principal thyroid hormone in vertebrate animals and man, produced by the thyroid follicles. Thyroxine is synthesized by iodination of the amino acid tyrosine and the oxidative condensation of two diiodotyrosine molecules with the splitting off of alanine. hormone secreted by the thyroid gland. Thyroxine (structure 1) is quite similar chemically and in biological activity to triiodothyronine (2). Both are derivatives of the amino acid tyrosine and are unique in being the only iodine-containing compounds of importance in the economy of all higher forms of animal life.