The digestive system, digestive enzymes and absorption in the villi

What this note covers

1. The digestive tract from mouth to anus, and its accessory organs
2. Chemical digestion of carbohydrate, protein and fat: which enzyme, where
3. Mastication, peristalsis and emulsification: three mechanical processes, three purposes
4. The structure of the villi and how they maximise absorption
5. What happens when the villi are damaged: a physiological mechanism the exam expects
6. Worked application: tracing a meal from mouth to absorption
7. How this topic is examined and what separates a top response

7 sections · 12 key terms & formulas · 6 common mistakes