The pelvis is the lowest part of your tummy (abdomen). Pelvic pain is more common in women. There are many different causes of pain in your pelvis. They can be separated by when they tend to happen, if you are pregnant and if they are accompanied by other symptoms such as vaginal bleeding.
thyroxine, thyroxin. a hormone of the thyroid gland that contains iodine and is a derivative of the amino acid tyrosine. The chemical name for thyroxine is tetraiodothyronine (symbol, T 4); it is formed and stored in the thyroid follicles as thyroglobulin, the storage form. hormone of the thyroid gland that contains iodine and is a derivative of the amino acid tyrosine. The chemical name for thyroxine is tetraiodothyronine (symbol, T 4); it is formed and stored in the thyroid follicles as thyroglobulin, the storage form.
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.