5.8 Concept of homeostasis Flashcards
What is homeostasis?
The maintaining of a consistent internal environment within the body.
What is a set point?
The physiological value around which the normal range fluctuates.
What is a normal range?
The restricted set of values that is optimally healthful and stable
What is negative feedback?
A mechanism that reverses a deviation from the set point and maintains body parameters within their normal range.
What is the stimulus?
The thing that has created a change in the internal environment
What are the receptors?
The cells in the body that have detected the change and the control center of the body that makes the decision of what to do
What is the effector?
The cells, tissues, or organs that respond to order from the control center and provide a response to the stimulus
What is the response?
Which turns feed back to the receptor causing whatever has been altered to return to normal
Given an example of negative feedback e.g., blood glucose levels being too low/high or internal temp being too low/high
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