B5- Homeostasis Flashcards
What is homeostasis?
The regulation of the conditions inside your body (and cells) to maintain a stable internal environment in response to changes in both internal and external conditions.
Why is homeostasis important for cells?
Cells need the right conditions to function properly, including the right conditions for enzyme action.
What are automatic control systems?
Systems in the body that regulate internal conditions, such as body temperature, blood glucose level, and water content.
What mechanism do automatic control systems use to maintain stability?
Negative feedback.
What is the first step in the negative feedback process?
Receptor detects a stimulus.
What happens after the receptor detects a stimulus in negative feedback?
The coordination centre receives and processes the information, then organises a response.
What is the role of the effector in negative feedback?
Produces a response that counteracts the change and restores the optimum level.
What occurs if the effector continues to produce responses?
It may cause the level to change too much (away from the ideal).
How does the body know to stop the effector’s response?
The receptor detects if the level becomes too different, and negative feedback starts again.
True or False: Negative feedback processes happen consciously.
False.
Fill in the blank: Homeostasis is important because it helps maintain the _______ internal environment.
stable.
