ENDOCRINE SYSTEM
THYROID FOLLICULAR CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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increase production of thyroglobulin
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decrease activity of NIS and pendrin
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stimulate thyrocyte growth
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increase T4 production
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Detailed explanation-1: -The pituitary produces thyroid-stimulating hormone (TSH), which stimulates the thyroid to produce T3 and T4.
Detailed explanation-2: -Since the pituitary gland would normally release TSH if the T4 is low, a high TSH level would confirm that the thyroid gland (not the pituitary gland) is responsible for the hypothyroidism. If the T4 level is low and TSH is not elevated, the pituitary gland is more likely to be the cause for the hypothyroidism.
Detailed explanation-3: -Your hypothalamus releases thyrotropin-releasing hormone (TRH), which triggers your pituitary gland to release thyroid-stimulating hormone (TSH), which stimulates your thyroid to release T3 and T4.
Detailed explanation-4: -Both iodine deficiency or excessive iodine intake can result in an elevated TSH [2, 3]. Globally, the most common cause of hypothyroidism is iodine deficiency [1]. Thyroid hormones are made from the chemical iodine, which humans need to get from the food they eat.