10 Questions
What is the origin of parafollicular cells?
Neural crest or endoderm
What is the function of calcitonin secreted by parafollicular cells?
Inhibits osteoclast activity
What is the trigger for calcitonin secretion?
Elevated blood Ca+2 levels
What is the function of iodination of tyrosyl residues?
Formation of T3 and T4
What is the concentration of iodide in the thyroid follicle compared to the blood?
30-fold higher
What is the role of thyroglobulin in thyroid hormone production?
Stores thyroid hormones
What is the number of tyrosyl residues in thyroglobulin?
140
What promotes the production of thyroid hormones?
TSH
What is the sequence of thyroid hormone production?
Thyroglobulin production, iodination, T3 and T4 formation
What is the process by which iodinated thyroglobulin is broken down?
Endocytosis
This quiz covers the relations of the thyroid gland, including the anterior, posterolateral, and posterior regions. It also touches on the recurrent laryngeal nerve and its location. Test your knowledge of the thyroid gland's anatomy!
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