在大脑皮层的影响下,下丘脑可以通过垂体调节和控制某些内分泌腺中激素的合成与分泌;而激素进入血液后,又可以反过来调节下丘脑和垂体中有关激素合成与分泌,这种调节作用叫做反馈调节。反馈调节可以使血液中激素经常保持在正常的相对稳定水平。如当血液中甲状腺激素含量增加到一定程度时,就会抑制下丘脑和垂体活动,使促甲状腺激素 Under the influence of the cerebral cortex, the hypothalamus can regulate and control the synthesis and secretion of hormones in some endocrine glands through the pituitary gland. When the hormone enters the bloodstream, it can in turn regulate the synthesis and secretion of the relevant hormones in the hypothalamus and pituitary gland. The role of regulation is called feedback regulation. Feedback regulation can make the blood hormones often maintain at a relatively normal level of stability. Such as when the blood thyroid hormone levels increased to a certain extent, it will inhibit the hypothalamus and pituitary activity, so that thyroid stimulating hormone