• The pouch-like portion of the proximal large intestine opening into the colon.
  CDISC Terminology
  Clinical Data Interchange Standards Consortium (CDISC), 2021
• A blind pouch-like commencement of the colon in the right lower quadrant of the abdomen at the end of the small intestine and the start of the large intestine.
  NCI
  U.S. National Cancer Institute, 2021
• A pouch that forms the first part of the large intestine. It connects the small intestine to the colon, which is part of the large intestine.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• The blind sac or outpouching area of the LARGE INTESTINE that is below the entrance of the SMALL INTESTINE. It has a worm-like extension, the vermiform APPENDIX.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• Cecum, pouch or large tubelike structure in the lower abdominal cavity that receives undigested food material from the small intestine and is considered the first region of the large intestine. It is separated from the ileum (the final portion of the small intestine) by the ileocecal valve (also...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2025