Thyroid Hormones

The video explores the biosynthesis of thyroid hormones, focusing on T3 (triiodothyronine) and T4 (tetraiodothyronine). It explains the role of thyroglobulin and the iodination process, detailing the activation of iodide and the mechanism of iodination of tyrosine residues. The video also covers the radical mechanism involved in synthesizing T3 and T4, and discusses the function of thyroxine in regulating metabolic rate. Additionally, it touches on hypothyroidism and the use of levothyroxine as a treatment.

What are the two main thyroid hormones discussed in the text?

Describe the role of thyroglobulin in the synthesis of thyroid hormones.

Discuss the proposed mechanisms for the biosynthesis of thyroid hormones mentioned in the text.

What is the function of thyroid peroxidase in the biosynthesis process?

Explain the significance of iodide in the biosynthesis of thyroid hormones.

How does the mechanism of iodination occur according to the text?

What are the differences between T3 and T4 in terms of their structure and function?

What is levothyroxine and how does it relate to T4?

What is the role of deiodinase enzymes in the metabolism of thyroid hormones?

Explain how the body regulates the levels of T3 and T4 in response to metabolic needs.