Thyroid Hormones, Thyroxine ( T4 ) And Triiodothyronine ( T3 )

Laboratory Report/ Miranda Tefft/ Homeostatic Imbalances of Thyroid Function/ Aline Potvin/ 11.18.2014/ Page [2] of [3]

Laboratory Report/ Brent Good/ Homeostatic Imbalances of Thyroid Function/ Thomas Redenbaugh/ 12.09.2014/ Page [3] of

In order to evaluate thyroid function and diagnose thyroid diseases such as hyperthyroidism or hypothyroidism, the free thyroxine (free T4) lab test is performed usually after discovering that the thyroid stimulating hormone (TSH) level is abnormal (Porth C 2014 p.1288)

Week 3 – LOM Assignment The thyroid is responsible for taking iodine and converting it into thyroid hormones which are released into the blood stream and transported throughout the body where they control metabolism.1 The thyroid is a vital part of the human body as every cell in the body depends on it for metabolic regulation. Too much or too little thyroid hormone secretion can result in hyperthyroidism or hypothyroidism. Hyperthyroidism is caused when the thyroid secretes too many thyroid hormones. Hyperthyroidism causes a rapid heart rate, elevated blood pressure and tremors. Other symptoms include increased nervousness, inability to concentrate, weakness, restlessness, difficulty sleeping, frequent bowel movements, weight loss and irregular

TSH not only stimulates the thyroid gland to churn out more hormones. If in excess, can cause overwhelming cell growth and division to result in goiter.

Thyroid research came about after a paper published in 1850, written by Thomas Curling talking about two girls who had severe malformation and were placed in an idiot asylum. One of the girls, 10, could not walk or talk very well; the other, 6 months, “was plump but had a marked idiotic expression, a large face with a small

Incidentally, there are actually two compounds made in the thyroid that are called thyroid hormone. The most abundant is T4, also known as thyroxine, which is then converted to T3, or triiodothyronine. T3 is the active form that produces the effects on metabolism.

The health care provider ordered blood work that included thyroid-stimulating hormone, triiodothyronine, thyroxine, and radioactive iodine uptake to confirm the diagnosis of hyperthyroidism. The labs returned with an elevated level of triiodothyronine and thyroxine, while the thyroid-stimulating hormone was decreased. There was also an

Graves’ Disease is diagnosed based on a series of blood tests, in addition to displaying several symptoms. Laboratory work seeks to discover elevated levels of serum thyroxine (T4) and triiodothyronine (T3) associated with TSH [2]. T3 and T4 help control the body’s metabolism and are needed for normal growth of the developing brain. TSH or thyroid-stimulating hormone is necessary to check for thyroid gland problems and how significant the issue is. One can be diagnosed from a small risk case, in which it can be controlled by medication, to a big risk bringing thyroid cancer into consideration.

The thyroid gland is the gland that makes and stores hormones that help regulate the heart rate, blood pressure, body temperature, and metabolism. Thyroid hormones are essential for the function of every cell in the body. They help regulate growth and the rate of chemical reactions in the body. Thyroid hormones also help children grow and develop. The thyroid gland is located in the lower part of the neck, below the Adam's apple, wrapped around the trachea. It has the shape of a butterfly with two lobes attached to one another by a middle part called the isthmus. The thyroid uses iodine, a mineral found in some foods and in iodized salt, to make its hormones. The two most important thyroid hormones are thyroxine (T4) and triiodothyronine

The thyroid is a part of the endocrine system. The thyroid produces two hormones that affect metabolism, heart function and brain development. The hormones also helps regulate body temperature, weight and skin dryness. The two hormones that the thyroid secrets is triiodothyronine (T3) and thyroxine (T4). Thyroid-Stimulation hormone (TSH) is secreated by the pituitary gland, also part of the endocrine system, regulates the production on thyroid hormoes. If thyroid hormones are low the pituitart gland releases more TSH and if the thyroid hormones are hign less TSH is released. If someone is has Hashimoto’s disease the function of the thyroid and pituitary gland is affected and starts to decrease the thyroid hormones in the body and causes the pituitary gland to release more TSH into the

The thyroid gland is found in the front of the neck and produces two main hormones. The hormones are called thuroxine (T4) and Triiodothyronine (T3). Together these hormones regulate the body’s metabolism by increasing energy use in cells, regulate growth and development, help to maintain body temperature and aid in oxygen consumption. These two hormones are regulated by hormones produced by the hypothalamus and pituitary gland. The hypothalamus senses changes in body’s metabolic rate and releases a hormone known as thyropin-releasing hormone (TRH). This hormone then flows through connecting vessels to the pituitary gland which signals it to release another hormone. This hormone is known as thyroid-stimulating hormone (TSH). TSH then makes

These hormones have a critical role in cell differentiation during development and help maintain thermogenic and metabolic homeostasis in the adults.12 Thyroid disorders are highly prevalent in the population and mostly affect women in childbearing age.13 In pregnancy, thyroid gland displays mild to moderate enlargement because of increased physiological demands. Thyroid function is altered by 4 factors in pregnancy: i) the transient increase in human chorionic gonadotropin (hCG) during the first trimester, which cross-reacts with thyroid-stimulating hormone (TSH) receptor; ii) the estrogen-induced rise in thyroxine-binding globulin (TBG) which is the major transport protein for thyroid hormone; iii) increased autoimmunity; and iv) increased urinary iodide clearance, which can cause impaired thyroid hormone production in areas of low iodine supply.12,14-17 Consequently, the levels of both T3 and T4, the major hormones released by the thyroid, increase by ~50% and serum TSH levels decrease in the first trimester and increase in the second and third

Thyroxine (T4) is produced by the thyroid gland in the throat. Because of its many

There can be several internal abnormalities with the thyroid gland and other systems of the body such as the immune system that can show signs of this condition. A few of those internal irregularities are to the actual gland’s size, surface,