Deficiency of iodine in the diet results in ________ caused by ________.
A)a goiter;increased production of thyroid-stimulating hormone (TSH)and increased thyroid hormone levels
B)atrophy of the thyroid gland;loss of negative feedback by thyroid hormones and increased thyroid-stimulating hormone (TSH)levels
C)a goiter;loss of negative feedback by thyroid hormones and increased thyroid-stimulating hormone (TSH)levels
D)atrophy of the thyroid gland;decreased sensitivity of receptors for thyroid-stimulating hormone (TSH)
E)atrophy of the anterior pituitary gland;loss of negative feedback by thyroid hormones

Question

Deficiency of iodine in the diet results in ________ caused by ________.
A)a goiter;increased production of thyroid-stimulating hormone (TSH)and increased thyroid hormone levels
B)atrophy of the thyroid gland;loss of negative feedback by thyroid hormones and increased thyroid-stimulating hormone (TSH)levels
C)a goiter;loss of negative feedback by thyroid hormones and increased thyroid-stimulating hormone (TSH)levels
D)atrophy of the thyroid gland;decreased sensitivity of receptors for thyroid-stimulating hormone (TSH)
E)atrophy of the anterior pituitary gland;loss of negative feedback by thyroid hormones

Quizplus · Accepted Answer

Deficiency of iodine in the diet results in a goiter, which is caused by the loss of negative feedback by thyroid hormones and increased thyroid-stimulating hormone (TSH) levels. Without sufficient iodine, the thyroid gland cannot produce enough thyroid hormones, and the pituitary gland responds by increasing TSH production to stimulate the thyroid gland. This constant stimulation causes the thyroid gland to enlarge, resulting in a goiter.

Deficiency of Iodine in the Diet Results in ________ Caused