a substance produced by a tadpole's thyroid gland that causes it to metamorphosize. See the thyroxine page.
(T4) -- A chemical substance made by the thyroid gland The thyroid gland uses iodine to make thyroid hormones. Thyroxine (T4), one of the most important thyroid hormones, has four iodine molecules attached to its molecular structure. Thyroid hormones are essential for the function of every cell in the body. They help regulate growth and the rate of chemical reactions (metabolism) in the body.
a hormone secreted by the thyroid gland; it regulates growth and development, organic metabolism, and the activity of the nervous system
A hormone affecting body temperature and the metabolism of protein, fat, and carbohydrates. Thyroxine also keeps up growth hormone release, skeletal maturation, and the heart function.
Hormone containing iodine that is secreted by the thyroid gland.
an iodine-containing hormone of the thyroid gland
A thyroid hormone; also called T4 or tetraiodothyronine.
Thyroxine is a hormone synthesized in and secreted by the thyroid gland. The primary secretory form of the thyroid hormone is tetraiodothyronine (T4), although some triiodothyronine (T3) is also secreted into the blood. The ratio of T4 to T3 is 25:1 in canine plasma. Once in the blood, T4 and T3 are bound by transport proteins. The primary binding protein is thyroxine-binding globulin (TBG) in the dog and albumin in the cat. Upon delivery to the target cell, T4 is deiodinated to T3 at the cell surface. T3 is the biologically active form of the thyroid hormone and more readily enters the target cell.
An amino acid of the thyroid gland which exerts a stimulating effect on thyroid metabolism.
The main hormone of the thyroid gland, responsible for controlling the rate of metabolism in the body; activity of the thyroid gland is measured with thyroid function tests.
The primary hormone produced by the thyroid gland. Naturally formed from iodine molecules, this hormone is available in animal and synthetic forms as replacement when the thyroid produces little or no thyroxine itself.
One of two important iodine-containing hormones secreted by the thyroid gland that assist in regulating the cellular metabolic rate of the body.
hormone produced by the thyroid gland. Also called 3,5,3',5'-tetraiodothyronine.
The primary hormone produced by the thyroid gland. Also know as l-thyroxine.
hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells; "thyroxine is 65% iodine"
Thyroxine, also referred to as T4, is one of the hormones synthesized and secreted by the thyroid gland; it acts to increase the rates of chemical reactions in almost all cells of the body, thus increasing the general level of body metabolism. Thyroxine can be administered by mouth to treat underactivity of the thyroid gland.
The primary hormone produced by the thyroid gland. T4 contains four atoms of iodine.
A hormone produced by the thyroid gland. It contains iodine which is essential for the body's normal growth, and metabolism. Following therapy for thyroid cancer many patients need to take thyroxine supplements in order to maintain normal weigh and body functions.
Thyroxin Thyroid hormone that controls the pace of chemical activity in the body.
The major thyroid hormone found in the thyroid gland and blood. Produced and secreted by the thyroid gland.
a hormone secreted by the thyroid gland which regulates metabolism.
Abbreviated T4. A hormone made by the thyroid gland that has four iodine molecules attached to its molecular structure. T4 and other thyroid hormones help regulate growth and control the rate of chemical reactions (metabolism) in the body.
The primary hormone produced by the thyroid. Thyroxin circulates throughout the body primarily bound to carrier proteins. Free T4 is converted to triiodothyronine (T3) in peripheral tissues.
thy-ROX-in A thyroid hormone that increases the rate of cellular metabolism. 665
the major hormone secreted by the thyroid. Thyroxine regulates general metabolism. Iodine dependent, Requires riboflavin, vitamin B2, selenium, and vitamin E for its formation. Antagonists with estrogen. If estrogen is too high thyroxine will be low and visa versa.
thyroid hormone which contains four atoms of iodine-known chemically as tetraiodothy-ronine
The primary hormone produced by the thyroid gland. More about this. It is available as medication.
a hormone secreted by the thyroid gland that is involved in the control of the metabolic rate.
the major hormone released by the thyroid gland
a hormone, secreted by the thyroid gland, that regulates metabolism.