1. Tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination
   "The endoscopy examined the upper portion of his GI tract";
   - alimentary canal, alimentary tract, digestive tube, digestive tract, gastrointestinal tract

Type of: canal, channel, duct, epithelial duct

Part of: digestive system, gastrointestinal system, systema alimentarium, systema digestorium

Encyclopedia: GI tract