Question

Which of the following best describes an example of negative feedback regulation in the endocrine system? The release of testosterone causes the of the prostate gland to increase in size. The release of CRH causes an increase in the release of ACTH. The release of thyroid hormones causes a decrease in the release of TRH. The release of ACTH causes an increase in the release of cortisol.

Answer 1

The release of thyroid hormones causing a decrease in the release of TRH best describes an example of negative feedback regulation in the endocrine system.

In negative feedback regulation, an increase in a certain hormone or chemical triggers a response that leads to a decrease in the production or release of that hormone or chemical. In this example, the release of thyroid hormones triggers a response that leads to a decrease in the release of TRH. This helps to maintain homeostasis and prevent overproduction of hormones.

Negative feedback regulation is a common mechanism in the endocrine system, which helps to maintain the balance of hormones in the body and prevent excessive or prolonged hormone release.

In contrast, in positive feedback, an increase in a certain hormone or chemical triggers a response that leads to an increase in the production or release of that hormone or chemical.