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NURS 172: Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+

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The nurse correlates increased circulating levels of triiodothyronine and thyroxine to which physiological response? 1. Decreased secretion of thyrotropin-releasing hormone (TRH) 2. Decreased secretion of thyrocalcitonin 3. Increased secretion of thyroid-stimulating hormone (TSH) 4. Increased secretion of parathyroid hormone : 1: 1. As levels of circulating T3 and T4 increase, the feedback to the hypothalamus is to decrease secretion of thyrotropin-releasing hormone (TRH). 2. Thyrocalcitonin (calcitonin) has a role in the regulation of calcium and is not affected by circulating levels of T3 and T4. 3. As levels of circulating T3 and T4 increase, the feedback to the hypothalamus is to decrease secretion of TRH. As TRH secretion decreases, thyroid-stimulating hormone (TSH) secretion also decreases. 4. Parathyroid hormone secretion is not affected by circulating levels of T3 and T4. 2 | P a g e The nurse is preparing a teaching tool that focuses on the endocrine system. How should the nurse explain the negative feedback system? 1. Hormone secretion increases when circulating levels drop. 2. Hormone secretion increases when target organs send signals. 3. Hormone secretion increases when circulating levels increase. 4. Hormone secretion increases when the target tissue does not recognize the level. : 1:


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