Biology › Section M · The animal body and digestion › Topic M.4
Digestive systems
From a jellyfish's single-opening cavity to a cow's four-chambered stomach, every digestive system is an answer to the same question: how do you dismantle food too big for a cell to swallow?
In this topic
- Three ways to eat
- Invertebrate designs
- Monogastric and avian vertebrates
- Ruminants and pseudo-ruminants
- Worked example: matching guts to animals
- Mouth and oesophagus
- The stomach
- The small intestine
- Large intestine and accessory organs
- Worked example: the journey of a pizza slice
- Common mistakes to avoid
- Key takeaways
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