Indicate whether each statement is true or false regarding the regulation of thyroid hormone secretion from the thyroid.
a. trh and tsh function together to decrease the production of t3 and t4.
b. trh stimulates the secretion of tsh from the anterior pituitary.
c. tsh stimulates the secretion of t3 and t4 from the thyroid gland.
d. increased blood levels of t3 and t4 inhibit trh and tsh secretion.

The correct answer is - option A- false

option B- true

Option C- true

Option D- true

Explanation:

The thyroid is an endocrine gland that releases thyroid hormones in the bloodstream. The secretion of these hormones is controlled by the TRH and TSH. TRH is secreted by the hypothalamus that binds to the pituitary and releases TSH.

TSH released by the pituitary gland into the bloodstream. TSH regulates the production of the thyroid hormones T3 and T4. Both of these hormones regulate TRH and TSH negatively.

Thus, the correct answer is option- option A- false

Option B- true

Option C- true

Option D- true

answer; /// i believe that the correct answer is (c); ///when the lungs expand, they fill with air from the atmosphere;