has part has part conduit for duct A tube shaped portion of tissue lined with epithelial cells that collects secretions and routes them to their destination[ZFA:0005171]. A tubular structure that transports secreted or excreted substances. AAO:0011123 FBbt:00100314 FMA:30320 Most ducts, but not all, are exocrine gland ducts. Some ontologies classify structures such as the oviduct here. TAO:0005171 UBERON:0000058 UMLS:C0687028 XAO:0004000 ZFA:0005171 anatomical duct ducts exocrine duct exocrine gland duct galen:Duct uberon organ subunit organism substance anatomical conduit space epithelial layer of duct