occurs when a target cell has been exposed to a hormone for an extended period of time and decreases the number of receptors for that hormone. is the term that describes two hormones that work together to stimulate a target cell with similar effects.

occurs when two hormones work in opposition on target tissue.

happens when one hormone must be present in order for another hormone to carry out its effects on target tissue.

is the loop that occurs when release of a hormone is inhibited.