When a hormone is present in excessive levels, the number of target-cell receptors may decrease. This is called
A) receptor recognition.
B) circulating hormone.
C) paracrine.
D) up regulation.
E) down regulation.

Question

Quizplus · Accepted Answer

Down regulation is the process by which a cell decreases the number of receptors to a particular hormone to reduce its sensitivity to that hormone when it is present in excessive levels.

When a Hormone Is Present in Excessive Levels, the Number