| gastrointestinal contents | The residue of ingested substances in the gastrointestinal tract. Excludes natural secretions and feces. (12 Dec 1998) |
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| gastrointestinal fistula | A fistulous tract connecting the stomach with the intestine. (05 Mar 2000) |
| gastrointestinal haemorrhage | Bleeding in the gastrointestinal tract. (12 Dec 1998) |
| gastrointestinal hormone | <endocrinology> A general term for any hormone which is secreted by some part of the digestive system for the purpose of aiding digestion. For example: gastrin. (09 Oct 1997) |
| gastrointestinal hormones | Hormones that originate in and regulate motor and secretory activity of the digestive organs. (12 Dec 1998) |
| gastrointestinal tract | <anatomy> The gastrointestinal tract starts from the oral cavity and proceeds to the oesophagus, stomach, duodenum, small intestine, large intestine, rectum and anus. (12 Jan 1998) |
| gastrointestinal transit | Passage of food (sometimes in the form of a test meal) through the gastrointestinal tract as measured in minutes or hours. The rate of passage through the intestine is an indicator of small bowel function. (12 Dec 1998) |
| receptors, gastrointestinal hormone | Cell surface proteins that bind gastrointestinal hormones with high affinity and trigger intracellular changes influencing the behaviour of cells. most gastrointestinal hormones also act as neurotransmitters so these receptors are also present in the central and peripheral nervous systems. (12 Dec 1998) |
| haematologic, gastrointestinal, and renal agents | A collective grouping for agents that act on the haematopoietic, gastrointestinal, and renal systems. (12 Dec 1998) |
| heterotrophic oral gastrointestinal cyst | A cyst of the oral cavity lined by gastric or intestinal mucosa from misplaced embryonic rests. (05 Mar 2000) |
| intubation, gastrointestinal | The insertion of a tube into the stomach, intestines, or other portion of the gastrointestinal tract to allow for the passage of food products, etc. (12 Dec 1998) |
| endoscopy, gastrointestinal | Visual examination of the gastrointestinal tract by means of a fibreoptic endoscope. It is used to localise, identify, and photograph pathologic alterations, to obtain biopsy material and perform other surgical interventions, and for delivery of medication. (12 Dec 1998) |
| acute miliary tuberculosis | A rapidly fatal disease due to the general dissemination of tubercle bacilli in the blood, resulting in the formation of miliary tubercles in various organs and tissues, and producing symptoms of profound toxaemia. Synonym: acute miliary tuberculosis, disseminated tuberculosis. (05 Mar 2000) |
| acute tuberculosis | A rapidly fatal disease due to the general dissemination of tubercle bacilli in the blood, resulting in the formation of miliary tubercles in various organs and tissues, and producing symptoms of profound toxaemia. Synonym: acute miliary tuberculosis, disseminated tuberculosis. (05 Mar 2000) |
| adult tuberculosis | Tuberculosis found in adults and characterised by lesions near the apex of an upper lobe, which may cavitate or heal with scarring without spreading to lymph nodes; theoretically, secondary tuberculosis may be due to exogenous reinfection or to reactivation of a dormant endogenous infection. Synonym: adult tuberculosis, postprimary tuberculosis, reinfection tuberculosis. (05 Mar 2000) |