Science Weekly Have we got the appendix all wrong?
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May 13, 2025 
Heather F Smith, a Professor of Anatomy at Midwestern University, shares fascinating insights into the often-misunderstood appendix. Once deemed dispensable, the appendix is now thought to play a role in immune system development and gut health. Smith discusses how recent research aligns with the emerging interest in the microbiome, suggesting the appendix could be more crucial than previously believed. She also touches on non-surgical treatments for appendicitis, challenging long-held assumptions about this enigmatic organ.
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Heather Smith's Appendicitis Experience
- Heather Smith personally experienced appendicitis as a child, leading to her appendix removal surgery.
- Her recovery included a hospital stay and a lasting scar from the surgery.
Appendix Location and Appearance
- The appendix is a small, worm-shaped organ attached to the cecum in the lower right abdomen.
- It projects off a pouch within the colon near the pelvis.
Appendix Evolution Across Mammals
- The appendix evolved independently about 30 times in different mammals, indicating a valuable function.
- It varies in shape but consistently appears as a cecal projection across species.