Trichuris


Trichuris
A genus of aphasmid nematodes (sometimes improperly termed Trichocephalus) related to the trichina worm, Trichinella spiralis, and having a body with a slender, elongated, anterior portion threaded into the mucosa of the colon or large intestine of the host and a thick posterior portion bearing reproductive organs and their products. T. contains about 70 species, all in mammals. [tricho- + G. oura, tail]
- T. suis a nematode species found in the pig; adult worms have been found in humans.
- T. trichiura the whipworm of humans, a species that causes trichuriasis; the body is filiform and slender in the anterior three-fifths, and more robust posteriorly; females are 4 or 5 cm long, males are shorter (with coiled caudal extremity and a single eversible spicule); eggs are barrel-shaped, 50–56 μm by 20–22 μm, with double shell and translucent knobs at each of the two poles; humans are the only susceptible hosts and usually acquire infection by direct finger-to-mouth contact or by ingestion of soil, water, or food that contains larvated eggs (development in the soil takes 3–6 weeks under proper conditions of warmth and moisture, hence distribution is chiefly tropical); larvae escape from eggs in the ileum, mature in approximately a month, and then pass directly into the cecum without undergoing a parenteral migration as occurs with Ascaris lumbricoides; adults may persist for 2–7 years.
- T. vulpis a nematode species found in the dog; the sexually mature adult has been found in the human appendix.

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Trich·u·ris trik-'yu̇r-əs n the type genus of the family Trichuridae of nematode worms comprising the whipworms

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n.

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Tri·chu·ris (trĭ-kuґris) [tricho- + Gr. oura a tail] the whipworms, a genus of nematodes of the family Trichuridae; several species parasitize the intestines of mammals.

Medical dictionary. 2011.

Look at other dictionaries:

  • Trichuris — Género de gusanos nematodos parásitos de los que la especie Trichuris trichiura infesta el tracto intestinal. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

  • Trichuris — Taxobox name = Trichurida regnum = Animalia phylum = Nematoda classis = Adenophorea subclassis = Enoplia ordo = Trichurida familia = Trichuridae genus = Trichuris subdivision ranks = Species subdivision = Trichuris trichiura Trichuris vulpis… …   Wikipedia

  • Trichuris — Tri|chu|ris die; <aus nlat. trichuris zu ↑tricho... u. gr. ourá »Schwanz«> Gattung der Fadenwürmer (Biol.) …   Das große Fremdwörterbuch

  • Trichuris — Tri|churis, die; [zu griech. thríx (Gen.: trichós) = Haar u. ourá = Schwanz] (Zool.): Fadenwurm …   Universal-Lexikon

  • trichuris — trich·u·ris …   English syllables

  • Trichuris — n.; see whipworm …   The new mediacal dictionary

  • trichuris — rə̇s noun Usage: capitalized Etymology: New Latin, from trich + uris (from Greek oura tail); from the lashlike anterior part that is often mistaken for a tail : a genus (the type of the family Trichuridae) of nematode worms co …   Useful english dictionary

  • Trichuris trichiura — Trichuris trichiura …   Wikipédia en Français

  • trichuris trichiura — género de gusanos que parasitan el intestino del hombre. Usualmente no produce síntomas pero a veces es causa de trastornos intestinales y nerviosos fotografía [véase http://www.iqb.es/diccio/t/tr.htm#trichuris] Diccionario ilustrado de Términos… …   Diccionario médico

  • Trichuris trichiuria — especie de tricocéfalos, que se hallan comúnmente en las regiones húmedas y cálidas del mundo. La ingestión de huevos de tricocéfalos produce infección en los seres humanos; los parásitos viven principalmente en el ciego o en el intestino grueso …   Diccionario médico


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