Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by:
- ASphincter of Oddi
- BIleo – Caecal valve
- CGastro – Oesophageal sphincter
- DPyloric sphincter
Solution & Step-by-step Explanation
Shutterstock Explore Undigested matter passes from the ileum (small intestine) into the caecum (large intestine). The Ileo-caecal valve ensures that this material does not flow back into the small intestine.