FRANCOIS L'HOPITAL, ISM / SCIENCE PHOTO LIBRARY FRANCOIS L'HOPITAL, ISM / SCIENCE PHOTO LIBRARY
Ileocaecal valve. Endoscope view inside the large intestine, showing the ileocaecal valve (centre), a sphincter muscle valve that separates the last part of the small intestine (ileum) and the beginning of the large intestine (caecum).
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