| helicis major muscle | <anatomy> A narrow band of muscular fibres on the anterior border of the helix of the auricle arising from the spine and inserted at the point where the helix becomes transverse. Synonym: musculus helicis major, large muscle of helix. (05 Mar 2000) |
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| helicis minor muscle | <anatomy> A band of oblique fibres covering the crus of the helix of the auricle. Synonym: musculus helicis minor, smaller muscle of helix. (05 Mar 2000) |
| helicobacter | A genus of gram-negative, spiral-shaped bacteria that is pathogenic and has been isolated from the intestinal tract of mammals, including humans. (12 Dec 1998) |
| helicobacter infections | Infections with organisms of the genus helicobacter, particularly, in humans, helicobacter pylori. The clinical manifestations are focused in the stomach, usually the gastric mucosa and antrum, and the upper duodenum. This infection plays a major role in the pathogenesis of type b gastritis and peptic ulcer disease. (12 Dec 1998) |
| helicobacter pylori | A bacterium that has been implicated in the development of duodenal and gastric ulcers. Many gastroenterologists now advocate treating with antibiotic regimens to eradicate this microorganism in the upper gastrointestinal tract of those who suffer from recurrent or intractable peptic ulcer disease. Combinations of bismuth, metronidazole and ampicillin (or tetracycline) have been used successfully. Others advocate the use of omeprazole in combination with amoxicillin (or clarithromycin). (27 Sep 1997) |
| helicobactor pylori | Bacteria that cause inflammation and ulcers in the stomach. (12 Dec 1998) |
| helicoid | Coiled, of a cymose inflorescence, branching repeatedly on the same side. (09 Oct 1997) |
| helicoid choroidopathy | Bilateral acquired abnormality of retinal pigment epithelium and choroid in which irregular multiple progressive swelling is followed by atrophic scars in linear patterns. Synonym: helicoid choroidopathy, serpiginous choroidopathy. (05 Mar 2000) |
| helicoid ginglymus | A synovial joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, as in the proximal radioulnar joint. Synonym: articulatio trochoidea, helicoid ginglymus, lateral ginglymus, rotary joint, rotatory joint, trochoid articulation, trochoid joint. (05 Mar 2000) |
| helicoidal cell wall | Type of plant cell wall in which each wall layer contains parallel microfibrils, but in which the orientation of the microfibrils changes by a fixed angle from one layer to the next. Gives a characteristic herringbone pattern in transmission electron microscopy. A similar architecture of fibrillar material is seen in some insect exoskeletons. (18 Nov 1997) |
| heliconia | <zoology> One of numerous species of Heliconius, a genus of tropical American butterflies. The wings are usually black, marked with green, crimson, and white. Origin: NL. See Helicon. Source: Websters Dictionary (01 Mar 1998) |
| heliconian | 1. Of or pertaining to Helicon. "Heliconian honey." 2. <zoology> Like or pertaining to the butterflies of the genus Heliconius. Origin: L. Heliconius. Source: Websters Dictionary (01 Mar 1998) |
| helicopod gait | A gait, seen in some conversion reactions or hysterical disorders, in which the feet describe half circles. Synonym: helicopodia. (05 Mar 2000) |
| helicopodia | Synonym: helicopod gait. Origin: G. Helix, a coil, + pous, foot (05 Mar 2000) |
| helicotrema | <anatomy> The opening by which the two scalae communicate at the top of the cochlea of the ear. Origin: NL, fr. Gr, a helix + a hole. Source: Websters Dictionary (01 Mar 1998) |