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Question

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

A
Duodenum is J-shaped
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B
The opening of the stomach into the duodenum is guarded by pyloric sphincter
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C
Ileum opens into the caecum of large intestine
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D
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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