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goitre is a marked swelling in the neck....

goitre is a marked swelling in the neck.

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Reason: Inadequate supply of iodine in our diet leads to the enlargement of thyroid gland which . This is seen as a marked swelling in the neck.
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    Assertion (A) : Simple goitre is also known as Endemic goitre Reason (R) : It is caused due to hyposecretion.of thyroxine

    ____gland is located in the neck region.

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