The first part of the large intestine, a pouch-like structure located where the small intestine connects to the colon.
From Latin caecus meaning 'blind,' because the structure appears closed at one end under early microscopy. The term entered English medical vocabulary in the 17th century via anatomical Latin.
Your appendix hangs off your caecum like a tiny worm—in fact, 'appendix' literally means 'attached thing.' Scientists still debate what it's actually for, though it may help digestion in some mammals.
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