Define negative feedback in hormonal regulation.

Define negative feedback in hormonal regulation.

• A. A control mechanism that amplifies deviation from a set point.
• B. A process that triggers cell division.
• C. A system that transports hormones.
• D. A control mechanism that reduces deviation from a set point, restoring homeostasis.

Answer: (D)

Negative feedback in hormonal regulation is a self-correcting loop where a change in a body condition triggers responses that oppose that change, bringing the variable back toward its set point and restoring homeostasis. Sensors detect the deviation, a control center processes the signal, and effectors adjust hormone output to reduce the deviation. For example, when blood glucose rises, the pancreas releases insulin to lower glucose levels; once normal, insulin release tapers off. This mechanism prevents runaway changes and maintains stable internal conditions, unlike processes that amplify changes or simply move hormones around without correcting the level.

Negative feedback in hormonal regulation is a self-correcting loop where a change in a body condition triggers responses that oppose that change, bringing the variable back toward its set point and restoring homeostasis. Sensors detect the deviation, a control center processes the signal, and effectors adjust hormone output to reduce the deviation. For example, when blood glucose rises, the pancreas releases insulin to lower glucose levels; once normal, insulin release tapers off. This mechanism prevents runaway changes and maintains stable internal conditions, unlike processes that amplify changes or simply move hormones around without correcting the level.