When the thyroid secretion is too much,the gl | vedclass

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(A) The thyroid gland is sensitive to the levels of thyroid hormones ($T_3$ and $T_4$) in the blood. When there is an excess of thyroid hormone secret

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Enlarged

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(A) The thyroid gland is sensitive to the levels of thyroid hormones ($T_3$ and $T_4$) in the blood. When there is an excess of thyroid hormone secretion (hyperthyroidism),the gland often enlarges due to overactivity or autoimmune conditions like Graves' disease. Conversely,when there is a deficiency of thyroid hormone secretion (hypothyroidism),the pituitary gland increases the secretion of Thyroid Stimulating Hormone $(TSH)$. This constant stimulation by $TSH$ causes the thyroid gland to grow in size in an attempt to produce more hormone,a condition known as a goiter. Therefore,in both cases of hyperthyroidism and hypothyroidism,the gland typically becomes enlarged.

When the thyroid secretion is too much,the gland itself gets enlarged; conversely,if the secretion is too little,the gland gets

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