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[DOC File]Topic 18: Hormones and the Endocrine System (Ch. 45)
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adrenocoritcotropic hormone (ACTH) or corticotropin – stimulates production of corticosteriods in adrenal cortex. thyroid-stimulating hormone (TSH) or thyrotropin – stimulates production of thyroxine in thyroid. luteinizing hormone (LH) – stimulates testosterone production, ovulation, and corpus luteum formation; a …
thyroid hormone synthesis pathway

[DOC File]Genetic Defects in Thyroid Hormone Synthesis and Action
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3. Defects in thyroid hormone synthesis (dyshormonogenesis) In about 15% of cases, CH is due to hormonogenesis defects caused by mutations in genes involved in thyroid hormone synthesis, secretion or recycling. These cases are clinically characterized by the presence of goiter, and the molecular mechanisms have been well defined.
hormone synthesis

[DOC File]Endocrine System Physiology- Thyroid Hormones
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The effects of thyroid hormone are mediated by the regulation of the transcription of the genes coding for key enzymes and proteins. These transcriptional effects of T3 can take many days to manifest themselves, for example, the effects on O2 consumption, heat production & free radical formation. There are also effects on the cardiovascular ...
thyroid hormone synthesis diagram

[DOC File]2-27-08 Thyroid Physiology
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Thyroid Hormone Secretion: TSH. from pituitary absorbed by thyroid, stimulates . pseudopodia formation. Pseudopodia. endocytose colloid, digest contents (including . Tg) Digested Tg has . T4/T3 enzymatically cleaved. from protein, released into circulation. TSH Functions - stimulates . iodide trapping (NIS), and . thyroid hormone synth ...
thyroid hormone synthesis and secretion

[DOC File]Anatomy Chapter 20: Endocrine System
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The thyroid gland has what coloration and why? Regulation of thyroid hormone secretion depends upon what feedback process? What are small, brownish-red glands located on the posterior surface of the thyroid gland. How many parathyroid glands do humans have? What are the two types of cells found in the parathyroid glands?
synthesis of thyroid hormones

[DOC File]Thyroid Hormones
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To form normal quantities of thyroid hormone, about 50mg of iodine is required each year or about 1mg/wk. Iodine is absorbed from the GI and excreted by the kidney, but some is absorbed by the thyroid. ... Sporadic cretinism is caused by a defect in T4 formation or developmental failure in thyroid formation.
how are thyroid hormones released

[DOC File]6 .k12.fl.us
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Growth hormone stimulates epiphyseal plate activity. Thyroid hormone modulates activity of growth hormone. Testosterone and estrogens (at puberty) ... Bony callus formation continues until firm union is formed in ~2 months. Stages in the Healing of a Bone Fracture. Bone remodeling.
production of thyroid hormone

[DOC File]PHYSIOLOGY – ENDOCRINE SYSTEM
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Which enzyme is used to catalyze formation of T3 & T4? Tyrosine peroxidase. Thyroglobulin peroxidase. Iodotyroiside deiodinase. All of the above. None of the above. Which of the following is FALSE regarding circulating thyroid hormone? Most circulating T4 is bound to Thyroid binding globulin (TBG) Most circulating T3 is bound to albumin.
steps of thyroid hormone synthesis

[DOC File]C H A P T E R 7 6
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Propylthiouracil, methimazole and carbimazole prevent formation of thyroid hormone through 2 mechanisms: Fist, through blocking the peroxidase enzyme that is required for iodination of tyrosine. Second, through blocking the coupling of two iodinated tyrosines to form thyroxine or triiodothyronine.
thyroid hormone synthesis pathway

[DOC File]Endotext.com - Thyroid Disease Manager
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Thyroid hormone is indispensable for normal development and metabolism of most cells and tissues. Thyroid hormones are metabolized by different pathways: glucuronidation, sulfation, and deiodination, the latter being the most important. ... Studies in athyreotic patients provide evidence for extrathyroidal formation of 3-T1AM (24), but the ...
hormone synthesis

Thyroid hormone formation