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Notes on thyroid gland
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The thyroid gland is a gland in the endocrine system. It helps to make and store hormones that help regulate one’s heart rate, blood pressure, body temperature, and the rate at which food is converted into energy. The thyroid hormones help every cell to function appropriately in the body. They help to regulate growth and the rate of metabolism in the body (Thompson, 2007). Without thyroid hormones we would not be able to function properly nor would children be able to physically mature and develop. The thyroid gland is located in the lower part of the neck, (in the male below the Adam’s apple), and wraps around the trachea. Its shape looks like a butterfly’s two wings (lobes) attached by a middle part called the isthmus. It usually weighs less than one ounce. The color of it is a brownish-red tone and it contains many blood vessels. Nerves are important for voice quality so that is able to pass through the thyroid.
Hormone secretion
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They help to generate heart rate, blood pressure, body temperature, and the rate in which food is converted into energy. The 2 main thyroid hormones are T3 (triiodothyronine) and T4 (thyroxin). The amount of thyroid hormones secreted is controlled by another hormone, called thyroid stimulating hormone (TSH), which is released from the pituitary gland in your head ("How Your Thyroid Works"). Thyroid hormones act throughout the body, influencing metabolism, growth and development, and body temperature. During infancy and childhood, adequate thyroid hormone is crucial for brain development (Tree, 2013). The thyroid gland also makes the hormone calcitonin, which is involved in calcium metabolism and stimulating bone cells to add calcium to bone ("How Your Thyroid Works")
I should remember the lecture note that parafollicular cells of the thyroid gland produce calcitonin.
First I will be discussing about the thyroid gland, so the thyroid gland is a gland in the neck that secretes hormones. These hormones regulate growth and development, and metabolism. The main hormone secreted is Thyroxine. So when a person like Margie is diagnosed with hypothyroidism it means the thyroid gland does not secrete enough hormones. As many females get over the age of 50, they are more at risk of developing hypothyroidism. The symptoms
The thyroid gland is located in the anterior, middle portion of the neck. Many of the bodies’ hormones come from the thyroid. According to Porth 2011, “the thyroid hormone increases the metabolism and protein synthesis in nearly all of the tissues of the body.” (p. 784). When these hormones are not regulated, a thyroid disorder develops such as hypothyroidism and hyperthyroidism.
Thyroid and metabolism hormones play a large role in the daily lives of all living species. Thyroid hormones regulate the metabolism and the metabolism is responsible for maintaining a specific range for the biochemical reactions that occur in the body (Martini 2014). The most important hormone for metabolic maintenance is thyroxine (T4). This hormone also plays a large role in body heat regulation. It is produced by the pituitary gland and secreted by the thyroid gland. The thyroid releasing hormone (TRH) must trigger the thyroid stimulating hormones (TSH) to release thyroid hormones to the thyroid gland. These hormones are under control of the hypothalamus, or main neural control center. Propylthiouracil (PTU) is a medication used to treat
Hypothyroidism is an endocrine disorder that effects the lives of many people. In hypothyroidism, the thyroid gland does not produce enough thyroid hormone, causing an array of symptoms such as fatigue, weight gain, depression, swelling of limbs, lack of focus and many more. The current standard of treatment of hypothyroidism is hormone replacement therapy with a synthetic form of thyroxine (T4) called Levothyroxine or T4 Monotherapy. The whole idea behind T4 Monotherapy is that the Levothyroxine (which is a synthetic version of the natural thyroid hormone thyroxine) will mimic what occurs naturally in the body, and be deiodinated in the peripheral tissues to become the more biologically active thyroid hormone triiodothyronine (T3) and thus, alleviating the patients symptoms. Unfortunately, this however, is not always the case. For some patients, even though they are in the therapeutic range using T4 monotherapy, their bodies aren’t properly converting the synthetic T4 to active T3. Because of this, coupled with the invention of the internet, patients are turning to search engines in hopes to find an answer that will alleviate their symptoms, which has led to a resurgence in the use of desiccated thyroid products. Desiccated thyroid is derived from porcine thyroid glands, and contain both T4 and T3 thyroid hormones. Some alternative medical practioners are claiming there is more benefit in this natural product vs synthetic, but perhaps we need to take a closer look into the alternative treatment options of hypothyroidism- such as desiccated products, and why natural might not always be better.
The hormones produced from the endocrine system come from a wide range of different places. Among those responsible for hormone production are the glands and a few organs as well. The glands that are involved are the pituitary, thyroid, thymus, parathyroid, and adrenal. The organs, which also play a vital part, are the pancreas, gonads, kidneys, heart, and parts of the digestive tract. All these different glands or organs work together in the production of certain hormones. Those produced in one location will almost always have an effect on many other areas of the body, not just the surrounding tissues.
The thyroid gland makes hormones that control the way every cell in the body uses energy. It is located in your neck and is the factory that makes the thyroid hormone T3 (Porth, 2011). It’s job is to wait for orders from the administrators of the body, the brain, to tell the thyroid how much T3 to release for the energy the body needs
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 (T3). The thyroid gland also makes the hormone calcitonin, which is involved in calcium metabolism and stimulating bone cells to add calcium to bone.
The thyroid is one of the most essential glands in the body. It is located in the endocrine system, and sits right in the neck just above where the collar bones meet. The thyroid gland functions to produce hormones that control how every cell in the body utilizes energy, also known as a process called metabolism. When a person's thyroid abnormally produces an excessive amount of thyroid hormones, this is a condition referred to as hyperthyroidism. The causes of hyperthyroidism are known to include: eating too much food with iodine, graves disease, inflammation due to viral infections, tumors of the testes and ovaries, taking a large amount of thyroid hormone, receiving medical imaging tests consisting of contrast dye iodine, and growth of thyroid or pituitary gland (Board "Hyperthyroidism"). With an overactive thyroid, the body tends to speed up its functions. Symptoms vary from, fast heartbeats, rapid weight loss, abnormal sweating, nervousness, and mood changes. Hyperthyroidism is normally diagnosed through a series of lab tests. If not properly taken care of, condition may worsen leading to bone and heart problems in the long run. As far as treatment is concerned, options may vary from person to person depending on age and the level of activity of the thyroid. Treatments include antithyroid medicines, radioactive iodine ablation, and the last resort, surgery. Though all treatment plans work, radioactive iodine ablation is a permanent and more reliable remedy for an overactive thyroid. Radioactive iodine ablation is in fact the most commonly used cure for people with hyperthyroidism problems in the US today. “The treatment has been around since 1942 and has been extensively used since the 1950's” ("Radioactive Iodine Treatment o...
The thyroid gland plays a major role in the endocrine, thyroxine, triiodothyronine and metabolism system. The gland can be found in the front of the neck and above where the collar bones meet. The thyroid gland controls the body by releasing T4 and T3 hormones. Controlling metabolism plays an important role when regulating mood, weight,
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 its way to the bloodstream until it reaches the thyroid where it is then signaled to activate T3 and T4 production [1]. This mechanism is controlled by a negative feedback loop meaning that when there is a sufficient amount of thyroid hormones in the blood stream, this will signal back to stop production of thyroid stimulating hormones. Complications occur when the thyroid hormones keep increasing even though there is already a sufficient amount of T3 and T4 in the blood stream. This process of over expression of thryroid hormones is known as hyperthyroidism. Hyperthyroidism is a general term that includes any disease that has a consequence of an overabundance of thyroid hormones. Hyperthyroidism is a general term but there are many variant diseases that are in the hyperthyroidism category. These diseases include diffuse toxic goiter, Basedow’s disease, thyrotoxicosis, Parry’s and Graves’ disease.
The thyroid gland is part of the endocrine system, and it is controlled by the pituitary which is known as the “master gland” of the endocrine system. The pituitary controls the thyroid by producing Thyroid Stimulating Hormone (TSH) which stimulates the production of thyroid hormones. . The thyroid gland secretes two main hormones: Thyroxine (T4) and Tri-Iodothyronine (T3). These hormones increase metabolic rate, heat production, oxygen consumption, appetite, growth hormone secretion, alertness and quicker reflexes. The thyroid gland is located in the anterior portion of the neck, beneath the Adam’s apple. It is divided in two lobes on either side of the windpipe: right lobe and left lobe. These lobes create what looks like a butterfly shape. The gland is essential to the contribution of maintaining the homeostasis of the body. It plays a role in monitoring the body’s expenditure of energy and running the body’s metabolism.
The thyroid is often referred to as the most important gland in the body. This is because it produces thyroxine (T4), triiodothyronine (T3), and calcitonin hormones. These hormones regulate a variety of tasks including cellular activity, brain function, metabolism, immune system, and the stimulation of the heart. (Friedman) One may take all of this for granted, however it is very important to take care of the thyroid gland. To produce these vital hormones, the thyroid requires iodine. The thyroid follicular cells trap iodine (as Iodide, I- ) by absorbing it from the blood in exchange for Na+. Next, the thyroid gathers the iodine, concentrating it 30-50 times more than in the blood. The iodide is then used to synthesize T4 and T3, and these hormones are released into the bloodstream. (Nussey) Without iodine, none of this would be possible...
...culatory system. Pituitary gland is a growth hormone that helps in mertabolism and develops reproductive organs. The thyroid controls metabolsim on the rate that the body breaks down food. Adrenal gland secretes many hormones including adrenaline which prepares the body to react in a stressful situation. The pancreas produces digestive enzymes and insulin. Ovaries produce ova and estrogen. Testes produce sperm cells and testosterone. To stay healthy you should get a regular medical check-up, eat a well-balanced diet, sleep at least 8 hours, and decrease stress in your life. Some problems are growth disorders, diabetes, and obesity. Puberty begins at different times for girls then boys. Girls start around ages 9-13 and boys are ages 10-15.
Each gland of the endocrine system is responsible for the releasing of different hormones, and those hormones trigger different activities in different places of the body. Hypothalamus, pineal body, anterior and posterior pituitary glands, adrenal gland, and thyroid gland are the main glands of the endocrine system while there are some other associated glands, as well. The endocrine system is known to be as the chemical information system. Some of the main functions of this system have to do with growth and development, metabolism, tissue function, sexual function, mood swings,