Unformatted text preview: 44) What is a goiter? Explain how goiters can develop in both hyposecretion and hypersecretion disorders. In these hyposecretion and hypersecretion disorders, would you expect the levels of other regulatory hormones involved in control of thyroid hormone secretion to be high or low? Why?
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Section Reference 1: 18.7 Thyroid Gland Solution: A goiter is an enlarged thyroid gland. Hyposecretion goiters are usually due to insufficient iodide in the diet. Resulting low levels of thyroid hormones cause increased TRH and TSH until adequate thyroid activity is restored.
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Jean E Mulder, MD. Children may have goiters that are diffuse or nodular, and the goiters may be associated with normal, decreased, or increased thyroid hormone production. The causes of goiter in children and adults are similar, but their relative frequency varies substantially. In the United States, for example, most children with a goiter have chronic autoimmune thyroiditis, whereas among adults, nontoxic nodular goiters predominate.
https://www.uptodate.com/contents/congenital-and-acquired-goiter-in-children
What Causes a Goiter? Goiters can occur when the thyroid gland produces either too much thyroid hormone (hyperthyroidism) or not enough (hypothyroidism). Much more rarely, the problem may arise when the pituitary gland stimulates thyroid growth to boost production of the hormone.
http://www.webmd.com/women/understanding-goiter-basics
Excess thyroid hormone levels (hyperthyroidism) may cause nervousness, sleeplessness, palpitations, reduced stamina, weight loss, and diarrhea. Because excess levels of thyroid hormone may raise blood levels of calcium too much in 10% of patients, their effect on appetite is variable.
http://endoconsult.net/thyroid.html
TRH stimulates the pituitary to make another hormone called TSH or thyroid stimulating hormone. TSH in turn stimulates the thyroid to grow and to make thyroid hormones. The secretion of TRH and TSH is elegantly regulated by the brain, and is based in large part on the blood levels of thyroid hormone. The more thyroid hormone the brain detects in the blood, the less TRH and TSH are secreted.
http://endoconsult.net/thyroid.html
A goiter is an enlarged thyroid gland. The thyroid gland, located in the front of your neck, makes thyroid hormones. When your thyroid gland is enlarged, it can produce too much, too little, or just enough thyroid hormone. The most common cause of goiter outside of the United States is a lack of iodine in the diet.
http://www.hormone.org/diseases-and-conditions/thyroid/goiter
Heart rate, blood pressure, growth, and breathing are examples of the many processes that depend upon thyroid hormone from the thyroid gland. When the gland becomes enlarged due to diseases or tumors, the gland is referred to as a goiter. A goiter can develop as a result of numerous different conditions. It can be associated with over-function of the thyroid gland (hyperthyroidism, or excessive thyroid hormones) or with under-function of the gland (hypothyroidism, or inadequate levels of thyroid hormones).
http://www.medicinenet.com/goiter_causes_symptoms_and_treatment/views.htm
-when the body doesn't produce or doesn't properly use insulin. -not enough insulin, body look to fat & protein store for alternative energy. -weight loss even though eating proper diet (not always weight loss will present PU/PD)
https://quizlet.com/98138869/ch-15-endocrine-system-flash-cards/
A goiter is an enlarged thyroid gland. The thyroid is the gland in front of the neck just below the area of the Adam's apple. This butterfly-shaped gland plays a critical role in regulating the metabolic processes of the body by producing thyroid hormone.
http://www.medicinenet.com/goiter_causes_symptoms_and_treatment/views.htm
what hormone secretion causes goiter
Thyroid hormone secretion causes goiter. A thyroid hormone secretion causes goiter. 