Certified Transport Registered Nurse Certification Practice Exam

In a negative-feedback endocrine loop, rising levels of the final hormone usually do what?

Stimulate further release of upstream hormones Inhibit release of one or more upstream hormones Destroy target-cell receptors immediately Convert the pathway to neural signaling

Correct Answer:

Inhibit release of one or more upstream hormones

Explanation:

Negative feedback stabilizes hormone levels by reducing upstream stimulation when the final hormone concentration rises.

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