The rate of secretion of thyrotropin is controlled by:

/in /by

 The rate of secretion of thyrotropin is controlled by:

a) The amount of iodine in the thyroid gland

b) The amount of thyroid hormones in the thyroid gland

c) The concentration of thyroid hormones in blood

d) The concentration of catecholamines in blood

"Get 15% discount on your first 3 orders with us"
Use the following coupon
FIRST15

Order Now