Which best explains the formation of a goiter from iodine deficiency?
A) Lack of suppression from TRH causes more thyroid hormone to be released. This continual release stimulates the thyroid and eventually causes it to grow bigger.
B) Lack of iodine causes an immune response in the thyroid causing it to swell.
C) Lack of negative feedback from thyroid hormone causes more TRH to be released. This continual release stimulates the thyroid and eventually causes it to grow bigger.
D) Positive feedback from excess thyroid hormone causes more TRH to be released. This continual release stimulates the thyroid and eventually causes it to grow bigger.
Correct Answer:
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A) Thyroid
A) low blood pressure
