True or False: In hormone systems, negative feedback occurs when the presence of a hormone inhibits release of the hormone.

Verified step by step guidance

1. Understand the concept of negative feedback in hormone systems: Negative feedback is a regulatory mechanism in which the output of a process inhibits or slows down the process itself.
2. Identify the role of hormones in this process: Hormones are chemical messengers that regulate physiological processes in the body.
3. Analyze the statement: The statement says that the presence of a hormone inhibits the release of the same hormone, which is a characteristic of negative feedback mechanisms.
4. Apply the concept to the statement: In many hormone systems, such as the release of thyroid hormones or cortisol, the presence of a certain level of hormone in the blood signals the system to reduce or stop further hormone release.
5. Conclude the truth value: The statement is true, as it correctly describes how negative feedback works in hormone systems.

Key Concepts

Negative Feedback Mechanism

Negative feedback is a regulatory mechanism in biological systems where the output of a process inhibits its own production. In hormone systems, this means that when a hormone reaches a certain level in the bloodstream, it signals the endocrine glands to reduce or stop its further release, maintaining homeostasis.

Hormone Regulation

Hormones are chemical messengers produced by glands in the endocrine system that regulate various physiological processes. Their levels must be tightly controlled, and negative feedback is a key strategy for ensuring that hormone concentrations remain within optimal ranges, preventing overactivity or deficiency.

Homeostasis

Homeostasis refers to the stable internal conditions maintained by living organisms despite external changes. Hormonal regulation, including negative feedback mechanisms, plays a crucial role in achieving homeostasis by adjusting physiological processes such as metabolism, growth, and response to stress.