Homeostasis and feedback Flashcards
(7 cards)
1
Q
Define homeostasis
A
The maintenance of stable internal environment within the body
2
Q
4 examples of homeostasis within the body
A
- Blood glucose
- Blood pressure
- Ion balance
- Water balance
3
Q
What 2 body systems help the most with homeostasis
A
- endocrine system
- nervous system
4
Q
What 4 components do we need to maintain homeostasis
A
- receptors
- CNS
- effector (muscles)
- signal/nerves
5
Q
What is the difference between negative and positive feedback
A
- negative feedback works to counteract a change, bringing a system back to equilibrium
- positive feedback amplifies a change, pushing a system further away from its normal state
6
Q
3 examples of negative feedback
A
- Acute restoration of blood pressure.
- Blood glucose regulation
- Temperature regulation
7
Q
2 examples of positive feedback
A
- Labour
- Micturition (urination)
