Chemical Coordination And Integration Question 23
Question: A hormone circulating in the blood with target tissue 1, 2, and 3 could act selectively on only target tissue 1 if:
Options:
A) Target tissue 1 had fewer hormone receptors than 2 and 3.
B) Target tissues 2 and 3 had hormone receptors with a higher hormone affinity than 1.
C) Target tissue 1 had hormone receptors with a higher hormone-affinity than 2 and 3.
D) The hormone was released only in the vicinity of target tissue 1.
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Because hormones are typically distributed throughout the blood, all potential target tissues will experience the same hormone concentration.
Only by having either higher numbers of receptors, or receptors with greater hormone affinity, can one tissue be stimulated preferentially over other tissues by the same hormone.
BETA
