what is thyroxine in biology
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thyroxine 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.
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thyroxine thyroxine. a thyroid hormone that contains iodine and is a derivative of the amino acid tyrosine, occurring naturally as l-thyroxine; its chemical name is tetraiodothyronine. It is formed and stored in the thyroid follicles as thyroglobulin and released from the gland by the action of a proteolytic enzyme.
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thyroxine thyroxine. n. 1. (Biochemistry) the principal hormone produced by the thyroid gland: it increases the metabolic rate of tissues and also controls growth, as in amphibian metamorphosis. It can be synthesized or extracted from the thyroid glands of animals and used to treat hypothyroidism.
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- Thyroid-Stimulating Hormone (TSH). Guide. A thyroid-stimulating hormone (TSH) blood test is used to check for thyroid gland problems. TSH is produced when the hypothalamus releases a substance called thyrotropin-releasing hormone (TRH). TRH then triggers the pituitary gland to release TSH.SH causes the thyroid gland to make two hormones: triiodothyronine (T3) and thyroxine (T4). T3 and T4 help control your body's metabolism. Triiodothyronine (T3) and thyroxine (T4) are needed for normal growth of the brain, especially during the first 3 years of life.
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Thyrotoxic myopathy Thyrotoxic myopathy (TM) is a neuromuscular disorder that develops due to the overproduction of the thyroid hormone thyroxine. Also known as hyperthyroid myopathy, TM is one of many myopathies that lead to muscle weakness and muscle tissue breakdown. Evidence indicates the onset may be caused by hyperthyroidism.lso known as hyperthyroid myopathy, TM is one of many myopathies that lead to muscle weakness and muscle tissue breakdown. Evidence indicates the onset may be caused by hyperthyroidism.
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Alternative names for thyroxine What is thyroxine? Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It is the inactive form and most of it is converted to an active form called triiodothyronine by organs such as the liver and kidneys.
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Thyroglobulin Thyroglobulin (Tg) is a 660 kDa, dimeric protein produced by the follicular cells of the thyroid and used entirely within the thyroid gland. Thyroglobulin protein accounts for approximately half of the protein content of the thyroid gland.
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thyroxine Noun. 1. thyroxine-hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells; thyroxine is 65% iodine. tetraiodothyronine, thyroxin, T. thyroid hormone-any of several closely related compounds that are produced by the thyroid gland and are active metabolically.
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An Overview of Thyroid Disease It combines the amino acid tyrosine and iodine to make the thyroid hormone. The two key hormones produced by the thyroid are thyroxine—known as T4—and triiodothyronine—known as T3. These hormones' key purpose is to regulate how your cells, organs, tissues, and glands use oxygen and energy.
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: Levothyroxine, also L-thyroxine or T4, is a synthetic form of the thyroid hormone thyroxine, which is normally secreted by the follicular cells of the thyroid gland. It is also used to treat thyroid hormone deficiency, and occasionally to prevent the recurrence of thyroid cancer.
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- The thyroid hormones, triiodothyronine (T3) and its prohormone, thyroxine (T4), are tyrosine-based hormones produced by the thyroid gland that are primarily responsible for regulation of metabolism.Iodine is necessary for the production of T 3 and T 4.he major form of thyroid hormone in the blood is thyroxine (T 4), which has a longer half-life than T 3. In humans, the ratio of T 4 to T 3 released into the blood is roughly 20 to 1.
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- Thyroid-stimulating hormone (also known as thyrotropin, TSH, or hTSH for human TSH) is a pituitary hormone that stimulates the thyroid gland to produce thyroxine (T 4), and then triiodothyronine (T 3) which stimulates the metabolism of almost every tissue in the body.hyroid-stimulating hormone (also known as thyrotropin, TSH, or hTSH for human TSH) is a pituitary hormone that stimulates the thyroid gland to produce thyroxine (T 4), and then triiodothyronine (T 3) which stimulates the metabolism of almost every tissue in the body.
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thyroxine thyroxine, thyroxin. 1  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, T4); it is formed and stored in the thyroid follicles as thyroglobulin, the storage form. Thyroxine is released from the gland by the action of a proteolytic enzyme.
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Free T4 test T4 (thyroxine) is the main hormone produced by the thyroid gland. A laboratory test can be done to measure the amount of T4 in your blood.
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How Much Does It Cost to Fertilize Your Yard? “A strong, healthy lawn is like a strong, healthy body,” she says. “You can’t expect to go to the gym once a year and get a bikini body.” Be careful, though, not to apply too much or too often, or you could seriously damage your lawn. Instead of the desired lush green grass, you could be left with dead brown patches.
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Thyroxine Thyroxine, also called 3,5,3′,5′-tetraiodothyronine, or T 4, one of the two major hormones secreted by the thyroid gland (the other is triiodothyronine). Thyroxine’s principal function is to stimulate the consumption of oxygen and thus the metabolism of all cells and tissues in the body.
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thyroxine a thyroid hormone that contains iodine and is a derivative of the amino acid tyrosine, occurring naturally as l-thyroxine; its chemical name is tetraiodothyronine.It is formed and stored in the thyroid follicles as thyroglobulin and released from the gland by the action of a proteolytic enzyme. thyroid hormone that contains iodine and is a derivative of the amino acid tyrosine, occurring naturally as l-thyroxine; its chemical name is tetraiodothyronine.
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adjusted trial balance “ The adjusted trial balance was handed out at the beginning of the meeting in order to inform the board of directors of any recent changes that had been made.
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What is the thyroid and what does it do? The two most important thyroid hormones are thyroxine (T4) and triiodothyronine (T3), representing 99.9% and 0.1% of thyroid hormones respectively. The hormone with the most biological power is actually T3.
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- Thyroglobulin is the most abundant protein in the thyroid gland; its concentration within the follicular lumen can reach 200-300 g/L. Its main function is to provide the polypeptide backbone for synthesis and storage of thyroid hormones (180).
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Thyroid-stimulating hormone From Wikipedia, the free encyclopedia. Thyroid-stimulating hormone (also known as thyrotropin, TSH, or hTSH for human TSH) is a pituitary hormone that stimulates the thyroid gland to produce thyroxine (T 4), and then triiodothyronine (T 3) which stimulates the metabolism of almost every tissue in the body.SH (with a half life of about an hour) stimulates the thyroid gland to secrete the hormone thyroxine (T 4), which has only a slight effect on metabolism. T 4 is converted to triiodothyronine (T 3), which is the active hormone that stimulates metabolism.
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- The thyroid gland produces thyroxine (T4), which is a relatively inactive prohormone and lower amounts of the active hormone, triiodothyronine (T3). Collectively, T3 and T4 are referred to as the thyroid hormones.rint | Email article to a friend | Last updated: January 14, 2015. The thyroid gland is part of the endocrine system and is responsible for producing and releasing thyroid hormones into the bloodstream.
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Clinical Education Center What is TSH and how is it measured? Thyroid stimulating hormone (TSH) is one of the most important hormones currently used to diagnose thyroid abnormalities. This glycoprotein is secreted by the pituitary and stimulates release of thyroxine (T4) and triiodothyronine (T3) from the thyroid gland.uestion 1. Thyroid stimulating hormone (TSH) is one of the most important hormones currently used to diagnose thyroid abnormalities. This glycoprotein is secreted by the pituitary and stimulates release of thyroxine (T4) and triiodothyronine (T3) from the thyroid gland.
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- thyroxine Thyroxine     thyroxine (T4) and triiodothyronine (T3), are tyrosine-based hormones produced by the thyroid gland the thyroid and parathyroid glands are in the neck. the thyroid harmones accelerate the metabolic rate and oxygen consumption in all body tissues.n the other hand, the insufficient of the secretion of thyroid hormone or thyroxine will cause the hypothyroidism. Hypothyroidism's symptoms include the basal metabolic rate that below the normal level.
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Hormones of the thyroid gland Biosynthesis. 1  The two thyroid hormones, thyroxine (3,5,3′,5′-tetraiodothyronine) and 3,5,3′-triiodothyronine, are formed by the addition of iodine to an amino-acid (tyrosine) component of a glycoprotein called thyroglobulin. Thyroglobulin is stored within the gland in follicles as the main component of a substance called the thyroid colloid.
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thyroxine (T 4) [ thi-rok´sin ]. a thyroid hormone that contains iodine and is a derivative of the amino acid tyrosine, occurring naturally as l-thyroxine; its chemical name is tetraiodothyronine.T 4) [ thi-rok´sin ]. a thyroid hormone that contains iodine and is a derivative of the amino acid tyrosine, occurring naturally as l-thyroxine; its chemical name is tetraiodothyronine.