Thyroid Hormone Regulation and Function
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Questions and Answers

Thyroid peroxidase enzyme catalyzes the coupling of iodine to form T3 and T4.

False

T3 is 15 times more potent than T4.

False

Thyroid hormones increase lipogenesis and cholesterol levels in blood.

False

Hashimoto's disease is a cause of primary hypothyroidism.

<p>True</p> Signup and view all the answers

Iodine deficiency is a common cause of secondary hypothyroidism.

<p>False</p> Signup and view all the answers

T4 is converted to T3 in the cell nucleus.

<p>False</p> Signup and view all the answers

Thyroid-stimulating hormone (TSH) is synthesized by the hypothalamus.

<p>False</p> Signup and view all the answers

High levels of T4 and T3 in the blood stimulate the secretion of TRH and TSH.

<p>False</p> Signup and view all the answers

The thyroid gland secretes two hormones: T4 and insulin.

<p>False</p> Signup and view all the answers

Thyroglobulin is synthesized in the smooth endoplasmic reticulum of follicular cells.

<p>False</p> Signup and view all the answers

The thyroid gland facilitates normal growth and maturation of tissues by maintaining the optimal level of metabolism required for their normal function.

<p>True</p> Signup and view all the answers

The thyroid gland secretes a hormone that increases serum calcium levels.

<p>False</p> Signup and view all the answers

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