4. checkmate. when the minimal amount of urinals are used in a boys bathroom, but you cannot use one without breaking guy code. 5 urinals, people at urinals 2 and 4, so you cannot use a urinal without being next to someone.
1 When blood concentrations of thyroid hormones increase above a certain threshold, TRH-secreting neurons in the hypothalamus are inhibited and stop secreting TRH. 2  This is an example of negative feedback.
For polar hormones, tropic hormones stimulate endocrine secretion by stimulating cell secretion; that is, exocytosis. An example is the regulation of growth hormone (GH) secretion by the tropic hormone growth hormone releasing hormone (GHRH) . GHRH is a hypophysiotropic hormone.Recall that endocrine secretion is whatever occurs to increase the amount of hormone in the circulation). An example is the hormone adrenocorticotropic hormone (ACTH) that stimulates secretion of the steroid hormone cortisol by cells of the zona fasciculata in the adrenal cortex.