8 4. Automatic control system in the body o Non-automatic control system Open loop system o Feedback control system k Closed loop system, Automatic control ck Negative feed back system k Positive feedback system o Feed-forward control system More quickly, less oscillated foresighted§ 4. Automatic control system in the body • Non-automatic control system Open loop system • Feedback control system * Closed loop system, Automatic control * Negative feedback system * Positive feedback system • Feed-forward control system More quickly, less oscillated & foresighted