How is the concentration of a hormone in plasma determined?
A) only by its rate of secretion
B) by the number of its target cells in the body
C) only by its rate of synthesis
D) by its secretion and clearance rates, and whether or not it binds to carriers and/or other plasma proteins
E) only by the rate of its degradation by the liver and kidneys

Question

Quizplus · Accepted Answer

The concentration of a hormone in plasma is determined by its secretion and clearance rates, whether it binds to carriers and/or other plasma proteins, and how efficiently it is degraded by the liver and kidneys. The rate of synthesis and number of target cells are not direct factors in determining plasma concentration.

How Is the Concentration of a Hormone in Plasma Determined