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(Solved): MAKE THE CONNECTION The Hypothalamus Produces TRH, Which Stimulates Anterior Pituitary To Secrete TS...


MAKE THE CONNECTION The hypothalamus produces TRH, which stimulates anterior pituitary to secrete TSH, which in turn stimulat

MAKE THE CONNECTION The hypothalamus produces TRH, which stimulates anterior pituitary to secrete TSH, which in turn stimulates thyroid gland to secrete thyroid hormones (T) and T4). Hyperthyroidism or hypothyroidism can be due to changes in the secretion of any of the above hormones. If the changes are in the thyroid itself, the disorder is said to be primary. If the change is due to the over or under secretion of the hypothalamic or pituitary gland hormones, the disorder is said to secondary. In order to determine the source of the hypo-or hyperthyroidism, blood tests for TSH and T) and Tamust be ordered by the physician. The normal plasma levels of these hormones are given below. Hormone TSH T, Ñ‚. Normal Serum/Plasma Levels 0.5-4.7 units/ml 80- | 80 mg/dL 5.6-12.5 ug/dL A patient who was experiencing very rapid heart rate was tested for these hormones. The results are given below. T Hormone Patient Serum/Plasma Levels TSH 7.25 u units/ml. T | | 90 mg/dL 13.5 ug/dL a. Which values are higher than normal?_7.25 Mums b. Would you say that this patient is euthyroid, hyperthyroid, or hypothyroid? hypey Thyyid c. Is the disorder primary or secondary? d. Explain your answer. 2. A patient came to the clinic complaining of a rapid heart rate. She is concerned about this change. Careful examination revealed other signs and symptoms: inability to tolerate heat. feeling of anxiety, nervousness, and loss of weight. What possible diagnosis would you consider? Testing of which hormone should be ordered? Use the internet to explain the endocrine (hormonal) cause of the clinical signs and symptoms.


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