14 Questions
Where does the pyramidal lobe of the thyroid gland form from?
Floor of the pharynx
What is the blood supply for the superior thyroid lobe?
External carotid artery
In which part of the body does the thyroglossal duct initially maintain connection?
Tongue
What is the usual characteristic of a midline neck mass that is a remnant of the thyroglossal duct?
Painless and moves up with swallowing
Where is the most common location for functioning thyroid tissue outside of the gland?
Base of the tongue
When may functioning thyroid tissue outside of the gland be commonly detected?
During adolescence
What does an increase in Thyroid Stimulating Hormone (TSH) lead to?
Growth of ectopic tissue
What element does the thyroid gland contain that is essential for hormone synthesis?
Iodine
What are the two hormones synthesized by the follicular cells of the thyroid?
T3 and T4
What is the main function of thyroglobulin in thyroid hormone production?
Tyrosine molecule processing
What is the name of the enzyme responsible for catalyzing the oxidation of iodide and organification of iodine into MIT/DIT?
Thyroid Peroxidase (TPO)
Which drug inhibits TPO and reduces T3/T4 production from the thyroid gland?
Propylthiouracil (PTU)
"Wolff-Chaikoff Effect" mimics which hormone?
(T4)
"Wolff-Chaikoff Effect" is caused by:
Excessive iodine intake
Test your knowledge on the anatomy and developmental stages of the thyroid gland. This quiz covers the lobes, isthmus, blood supply, and embryonic development of the thyroid gland.
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