A goiter results from low dietary iodine levels
A) because the hypothalamus cannot be inhibited without iodine.
B) because ADH levels rise controllably.
C) due to the activity of the anterior pituitary gland.
D) as glucagon levels elevate.
E) because thyroxine cannot be made, which results in high levels of TSH.

Question

Quizplus · Accepted Answer

Low dietary iodine levels prevent the synthesis of thyroxine, leading to high levels of thyroid-stimulating hormone (TSH) from the pituitary gland, which causes the thyroid gland to enlarge, resulting in a goiter.

A Goiter Results from Low Dietary Iodine Levels