When sensors detect a change in a hormone level, the hormonal response is regulated by which of the following mechanisms that will return the level to within normal range
A) Metabolic
B) Feedback
C) Production
D) Action potential
Ans: B
Feedback:
Feedback (negative and sometimes positive) mechanisms respond to levels that are too high or too low. The level of many of the hormones in the body is regulated by negative feedback mechanisms. The function of this type of system is similar to that of the thermostat in a heating system. For example, when the sensors detect a decrease in blood levels, they initiate changes that cause an increase in hormone production. Metabolic responses and increased/decreased production occur as a consequence of hormone level fluctuations, not as a regulating mechanism. Action potential is not a regulating mechanism for this function.
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