Biology › Section M · The animal body and digestion › Topic M.6
Digestive processes and their regulation
Digestion is a four-step relay — ingest, digest, absorb, eliminate — run by a chain of enzymes and timed by nerves and hormones so each stage fires only when the one before it is done.
In this topic
- The four steps
- Carbohydrate digestion
- Protein digestion
- Lipid digestion: why emulsification
- Micelles, chylomicrons, and vitamins
- Worked example: following one triglyceride
- Elimination and its failures
- Neural control and the three phases
- Hormonal control
- Worked example: a fatty meal's regulatory cascade
- Common mistakes to avoid
- Key takeaways
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