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mOWed. This test can only be taken once Force Completion This test can be saved and resumed later. Question Completion Status: QUESTION 1 2.8 1. Plasma and urine osmolality valtues in a patient are 295 and 100 mosm/, respectively The urinary excreton of aquaporin-2 is very low but increases substantialy in response to exogenous admirastration of antiduretic hormone (ADH) The most likely diagnosis for this patent is which of the following? A. Neurogenic Diabetes Insipidus B. Nephrogenic diabetes insipidus C. Syndrome of inappropriate ADH secretion, hypothalamic D. Syndrome of inappropriate ADH secretion by an ectopic tumor E. The patient is normal c a. c b. c e 1.35 poir QUESTION 2

Explanation / Answer

Ans. 3) “1” (A patient suffering from nephrogenic diabetes insipidus has enhanced synthesis of ADH in the par ventricular nucleus.)

5.) ‘B’ (This due to presence of hypothalamic tumor which secretes large amounts of TRH)

7.) “C” (The reason for the enlarged thyroid gland and high plasma levels of T4 and T3 are the peripheral vascular resistance)

8.) “A” (The thyroid peroxidase in the apical plasmalemma oxidizes iodide to iodine. Hence the answer would be thyroid content of iodine).

9.) “A” (The given symptoms are of Hashimoto’s disease.)

10.) “D” (The least expecting factor in such patient would be increased respiratory rate.)

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