Question

QUESTION:
1. The half-life of most hormones in the blood is relatively short. For example, when
radioactively labeled insulin is injected into an animal, half of the labeled hormone
disappears from the blood within 30 min.
a. What is the importance of the relatively rapid inactivation of circulating
hormones?
b. In view of this rapid inactivation, how is the level of circulating hormone kept
constant under normal conditions?
c. In what ways can the organism make rapid changes in the level of a circulating
hormone?

Answer 1

Explanation:

Regulation of Hormone Leuels in the Blood The half life of most hormones in the blood is relatively short. For example, if radioactively labeled insulin is injected into an animal, one can determine that within 30 min half the hormone has disappeared from the blood.