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easyMCQNEET 20232026Biology
1 mark

Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by:

  1. A
    Sphincter of Oddi
  2. B
    Ileo – Caecal valve
  3. C
    Gastro – Oesophageal sphincter
  4. D
    Pyloric 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.

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Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by:
A
Sphincter of Oddi
B
Ileo – Caecal valve
C
Gastro – Oesophageal sphincter
D
Pyloric sphincter

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