Homeostasis and Feedback Mechanisms

These flashcards cover key concepts related to homeostasis and feedback mechanisms, exploring definitions, functions, and examples.

Homeostasis

The process by which a stable internal environment is maintained in the body despite external changes.

Components of Homeostatic Mechanisms

The three components include Receptors, Set Point, and Effectors.

Receptors

Cells or structures that detect changes in the internal or external environment.

Set Point

The ideal value or range of a variable that homeostatic mechanisms aim to maintain.

Effectors

Muscles or glands that carry out responses to bring the variable back to the set point.

Negative Feedback

A control mechanism that reduces the output of a system to bring it back to a set point.

Body Temperature Regulation

The process by which the body maintains its temperature; if it drops, receptors signal effectors to generate heat.

Positive Feedback Loop

A feedback mechanism where a change causes an effect that stimulates further change in the same direction.

Example of Positive Feedback

The process of childbirth where the hormone Oxytocin increases uterine contractions.

Example of Negative Feedback

The regulation of blood glucose levels where insulin reduces blood sugar when it is high.