thyroxine

(noun)

a hormone (an iodine derivative of tyrosine), produced by the thyroid gland, that regulates cell metabolism and growth

Related Terms

Examples of thyroxine in the following topics:

  • Thyroid Gland

    • The thyroid gland produces the hormones T3 (triiodothyronine) and T4 (thyroxine).

  • Lipid-Derived, Amino Acid-Derived, and Peptide Hormones

    • Examples of amino acid-derived hormones include epinephrine and norepinephrine, which are synthesized in the medulla of the adrenal glands, and thyroxine, which is produced by the thyroid gland.

  • Intracellular Hormone Receptors

    • Other lipid-soluble hormones that are not steroid hormones, such as vitamin D and thyroxine, have receptors located in the nucleus.

  • Hormonal Regulation of Metabolism

    • The basal metabolic rate, which is the amount of calories required by the body at rest, is determined by two hormones produced by the thyroid gland: thyroxine, also known as tetraiodothyronine or T4, and triiodothyronine, also known as T3.