Question 10 Considering the case study given below, what are T4 and T3? [2 pt: L

Question

Question 10 Considering the case study given below, what are T4 and T3? [2 pt: L1; II.B] An 11-yo female with no significant past medical history presented with symptoms of weight loss and heat intolerance. She has also experienced a decline in grades at school. The physician ordered thyroid function tests including Free T, Ty, TSH ati-TSH receptor antibodies, anti thyroglobulin and anti-thyroid peroxidase antibodies. The results are shown below Ref Range 2.87 0.73-1.77 ng/dL Test Result Units Free T4 18.2 5.0-12.0 ug/dL 374.00 123-211ng/dL TSH anti-thyroglobulin Ab anti-thyroid peroxidase Ab anti-TSH receptor Ab

Explanation / Answer

Answer 10. The correct option is A. Both are hormones produced by thyroid gland.

Answer 11. The correct option is C. Increased levels of T3 provide for feedback inhibition of TSH production by the pituitary gland.

Answer 12. The correct option is C. Hyperthyroidism. High levels of T3 and T4 are the markers for hyperthyroidism.

Answer 13. The correct option is A. Autoimmune antibody stimulation of the thyroid gland. Extreme high levels of antithyroglobulin Ab indicates Grave's disease which is an autoimmune disorder in which thyroid gland is stimulated by body's own immune system.

Answer 14. The correct option is A. Excess thyroid hormones are increasing the metabolic rate.

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