What you'll learn
How hormones keep the body in balance.
Key ideas
- Hormones and the endocrine system; insulin, glucagon, adrenaline.
- Homeostasis: blood glucose, temperature and water (kidneys).
Exam tips
- Compare nervous and hormonal responses.
- Explain negative feedback.
Common mistakes
- Muddling insulin and glucagon.
- Confusing nervous and endocrine systems.