Hyperthyroidism is excessive secretion of thyroid hormone, this can happen due to

Excess secretion of thyroid hormone in thyroid gland

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Excess secretion of TSH from pituitary gland

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Excess secretion of TSH-RH from hypothalamus

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All the above

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Solution

The correct option is D
All the above

Thyroid hormone is secreted by thyroid gland under the influence of Thyroid secreting hormone(TSH).TSH is produced in pituitary which in turn is secreted under the influence of TSH- releasing hormone(TSH-RH) from hypothalamus. Therefore excess secretion of any of these can cause hyperthyroidism.

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Similar questions

Dwarfism results due to :

(a) excessive secretion of thyroxine hormone

(b) excessive secretion of growth hormone

(d) less secretion of growth hormone

\begin{matrix} Column 1 & Column 2 A. Melatonin & i. Swelling of the thyroid gland B. Cretinism & ii.Increased rate of synthesis and secretion of the thyroid hormones C. Hyperthyroidism & iii. Defective development and maturation of the growing baby leading to stunted growth D. Goitre & iv. Regulates the diurnal rhythm of the body \end{matrix}

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