Biology (Edexcel, Combined Science, Higher) Animal Coordination, Control and Homeostasis (Edexcel, Combined Science, Higher) Topic 7 – Animal coordination, control and homeostasis – Part 2 (HT only) (Edexcel) Lesson Progress Topic 7 – Animal coordination, control and homeostasis – Part 2 (HT only) (Edexcel) Previous Topic Back to Lesson Previous Topic Back to Lesson