Blood levels of which of the following substances is decreased in Graves’ disease?

T_{3}

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T_{4}

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DIT

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TSH

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Solution

The correct option is D TSH
In Grave's disease (hyperthyroidism), the thyroid is stimulated to produce and secrete large quantities of thyroid hormones as a result of stimulation by thyroid-stimulating immunoglobulins
(antibodies to the thyroid-stimulating hormone (TSH) receptors on the thyroid gland). Because of the high circulating levels of thyroid hormones, anterior pituitary secretion of TSH is turned off (negative feedback).

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Which of the following diseases can be treated with thyroxine supplementation?

1. Graves' Disease

2. Hypothyroidism

3. Cretinism

4. Hyperthyroidism

Identify the hormone secreted by pancreas in the following cases:

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b.when the blood sugar levels decreases.

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