8/23/2019 CHEM 2 Ch 22 Review Questions

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CHemiastry ch22 thyroid Quiz Bank exam2

1. The thyroid gland produces all of the following EXCEPT:a. T4b. T3c. Thyroglobulind. TSH*

2. The thyroid gland:a. Depends on thyroidal Peroxidase TPO to permit iodination of the tyrosyl residues to

make MIT and DIT*

b. Usually functions independent of TSH levelsc. Depends on thyroidal peroxidase TPO to permit the joining of two DIT residues to form

T3

d. Is an ineffective iodione trap3. Hypothyroidism is generally associated with all of the following EXCEPT:

a. TPO antibodiesb. Depressionc. An elevation of TSh levelsd. TSH receptor antibodies*

4. A 26 year old man presents with a 3cm, right lobe, thyroid nodule and a normal TSH What is thenext test that should be preformed

a. Free t4 levelb. Thyroid ultrasoundc. Thyroid scand. FNA of the nodule*

5. A 65 year old woman presents with fatigue, hypothermia, pericardial effusions, and hair loss.Her thyroid function tests show a significantly elevated TSH and a low free t4. All of the

following laboratory test abnormalities may be associated with her underlying condition

EXCEPT:

a. An elevated cholesterol levelb. Elevated CPK levelsc. Anemiad. Elevated WBC*

6. All of the following abnormalities might be expected in a severly ill patient EXCEPTa. Low t4b. Low reverse t3*c. Low t3d. Low TSH

7. The following are treatment options for hyperthyroidism associated with graves disease EXCEPTa. PTUb. Radioactive iodinec. Beta blockers

8/23/2019 CHEM 2 Ch 22 Review Questions

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CHemiastry ch22 thyroid Quiz Bank exam2

d. Thyroid hormone*8. A 34 year old woman presents with goiter, tachycardia, and weight loss of 2 months duration.

TSH is undetectable and free T4 is high. All of the following tests are usefl in diagnosing the

cause of hyperthyroidism EXCEPT

a. TSH receptor antibodiesb. Fine needle aspiration biopsy of the thyroid gland*c. TSHd. RAIU

9. All the following statements about iodine are true EXCEPTa. Iodine deficiency is one of the most common causes of hypothyroidism in the worldb. Radioactive iodine treatment of graves disease is effective in less than 40% of patients

treated*

c. Radioactive iodine uptake is often useful in determining the cause of thyrotoxicosisd. T4 has 4 iodine molecules

10.The fetusa. Does not develop a thyroid gland until the third trimesterb. Is dependent on thyroid hormone for normal neurologic development*c. Will be borne with hypothyroidism is approximately 1 /400 births in developed

countries

d. Is not susceptible to damage from radioactive iodine therapy given the mother