Anatomy & Physiology › Section U · The digestive system › Topic U.4
The small and large intestines
Almost every nutrient you absorb crosses the lining of the small intestine, and the large intestine reclaims most of the water that is left. This topic follows chyme from the pyloric sphincter to the anus.
In this topic
- Small in width, not in length
- Duodenum, jejunum and ileum
- Folds, villi and microvilli
- Glands and cells of the lining
- Moving chyme along
- Worked example: where the water goes
- The large intestine and its wall
- Gut bacteria: known and debated
- Colon movements and defecation
- Worked example: lactose intolerance
- Common mistakes to avoid
- Key takeaways
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