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Endocrinologist ___________________________ Date ______________ It’s Just Stress, Right? Case Study Directions: Read each part, and then answer the following questions. Part I 1. What was unusual about Ellie’s behavior or appearance? 2. Do you think stress could be causing her difficulties? Do you know of anything else besides stress that might be causing these difficulties? Part II (Use page 979 in your text for help) 3. Where is the thyroid gland located? 4. What hormones are made and released from the thyroid? 5. Describe the function of these thyroid hormones. 6. Protrusion of the eyes is called exophthalmos. Exophthalmos is not a condition, but rather a sign of a condition, usually caused by something wrong with the thyroid gland. Is homeostasis being maintained by her endocrine system? 7. What hormones are responsible for maintaining water balance that is secreted by the hypothalamus? (Hint: look on page 986-987) 8. What is the significance of the slight swelling in Ellie’s neck? (hint: where is the thyroid located) 9. Based on the information you have at this point, do you think Ellie’s thyroid gland is hyperactive or hypoactive? Explain your answer. (Hint: use page 985 for help) 10. Dr. Simmons ordered blood tests to measure Ellie’s levels of thyroxine and thyroidstimulating hormone (TSH or thyrotropin). If Ellie has a hyperactive thyroid, what are the expected results? What are the anticipated results if she has a hypoactive thyroid? (Hint: which hormones would have high levels and which hormones would have low levels?) Part III 11. Why are her TSH levels low instead of high if her thyroid is releasing too much hormone? (Hint: use page 987 for help) Part IV 12. What are some of the treatments Ellie’s doctors suggested? 13. Have her symptoms improved since treatment? 14. Is she cured? Explain your answer.