clinical measurement alimentary/gastrointestinal measurement 2012-07-30T01:37:54Z Any measurement to assess the morphological or physiological state of the alimentary/gastrointestinal tract, that is, the system of organs within multicellular animals that takes in food, digests it to extract energy and nutrients, and expels the remaining waste. The major functions of the alimentary/GI/digestive tract are ingestion, digestion, absorption, and defecation. CMO:0000995 JSmith clinical_measurement_ontology