3.6.4.1 Principles of homeostasis and negative feedback Flashcards
1
Q
What does homeostasis control?
A
Maintenance of constant internal environment
- Core temperature
- Blood pH
- Blood glucose concentration
2
Q
What is the difference between positive feedback and negative feedback?
A
- Positive - amplifies a change (e.g. platelets release chemicals attracting more platelets which release more chemicals)
- Negative - reduces the impact of a change