By the end of this section, you will be able to:Describe how hunger and eating are regulatedDifferentiate between levels of overweight and obesity and the associated health consequencesExplain the health consequences resulting from anorexia and bulimia nervosa

By the end of this section, you will be able to:Understand what is meant by consciousnessExplain how circadian rhythms are involved in regulating the sleep-wake cycle, and how circadian cycles can be disruptedDiscuss the concept of sleep debt

Students learn about homeostasis and create models by constructing simple feedback systems using Arduino boards, temperature sensors, LEDs and Arduino code. Starting with pre-written code, students instruct LEDs to activate in response to the sensor detecting a certain temperature range. They determine appropriate temperature ranges and alter the code accordingly. When the temperature range is exceeded, a fan is engaged in order to achieve a cooling effect. In this way, the principle of homeostasis is demonstrated. To conclude, students write summary paragraphs relating their models to biological homeostasis.