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Thyroid Hormone Synthesis

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Questions and Answers

What is unique about the synthesis of thyroid hormones T3 and T4?

They involve the use of a rare element. (correct)

They require a small amount of oxygen.

They are synthesized in the pancreas

They occur in the presence of insulin.

What is the purpose of thyroglobulin?

To store thyroid hormones in the bloodstream.

To synthesize thyroid hormones in the thyroid gland.

To convert T4 to T3 in the thyroid gland.

To release thyroid hormones on need from the colloid. (correct)

Where does the conversion of T4 to T3 occur?

In the liver.

In the thyroid gland.

In the pancreas

In peripheral tissues (correct)

What is the significance of the conversion of T4 to T3?

<p>It makes T3 a more active hormone</p> Signup and view all the answers

What is the relationship between thyroglobulin and thyroid hormones?

<p>Thyroglobulin is a precursor molecule for thyroid hormones</p> Signup and view all the answers

Study Notes

Thyroid Hormones T3 and T4

Unique feature of T3 and T4: require iodide, a rare element, for their synthesis.
T3 and T4 are synthesized as part of a large precursor molecule called thyroglobulin.
Thyroglobulin is stored in the colloid to be released as needed.
Peripheral conversion of T4 to T3 occurs, resulting in a much more active hormone (T3).

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Description

Learn about the unique characteristics of thyroid hormones T3 and T4, including the role of iodide and thyroglobulin in their synthesis. Understand the peripheral conversion of T4 to T3 and its significance.