The negative feedback in the hypothalamic-pituitary system consists in the action of pituitary hormones Bbl6epuTe ofluH OTBeT: a. inhibiting the peripheral gland b. stimulating the peripheral gland c. inhibiting the hypothalamus d. stimulating the hypothalamus

The correct answer is c. inhibiting the hypothalamus.<br /><br />In the hypothalamic-pituitary system, negative feedback occurs when the levels of a hormone produced by the peripheral gland (such as the thyroid gland or adrenal gland) rise to a certain level, signaling the pituitary gland to reduce or stop the production of the corresponding pituitary hormone. This, in turn, inhibits the hypothalamus from releasing its respective hormone, thus completing the negative feedback loop.