Identify the incorrect statement w.r.t. human alimentary canal.

Duodenum is J-shaped

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The opening of the stomach into the duodenum is guarded by pyloric sphincter

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Ileum opens into the caecum of large intestine

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Caecum is a small blind sac which hosts some symbiotic micro-organisms

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Solution

The correct option is A Duodenum is J-shaped
Duodenum is C-shaped. Stomach is J-shaped and opens into duodenum which is guarded by pyloric sphincter. Ileum opens into caecum and this opening is regulated by ileo-caecal valve.

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