heterotopia

het·er·o·top·ic

H0178860 (hĕt′ər-ə-tŏp′ĭk)adj.1. Occurring in an abnormal anatomic location: heterotopic bone formation.2. Grafted or transplanted into an abnormal location: heterotopic liver transplantation.

het′er·o·to′pi·a (-tō′pē-ə) n.

heterotopia

(ˌhɛtərəʊˈtəʊpɪə) or

heterotopy

n (Pathology) abnormal displacement of a bodily organ or part[C19: from New Latin, from hetero- + Greek topos place] ˌheteroˈtopic, ˌheterˈotopous adj

heterotopy, heterotopia, heterotopism

a condition in which normal tissue is misplaced, especially in the brain, so that masses of gray matter are found in the white matter. See also biology.. — heterotopous, adj.See also: Brain

deviation from the normal ontogenetic sequence with regard to the placing of organs or other parts. Also heterotopism. See also brain. — heterotopous, adj.See also: Biology

Heterotopia

heterotopia

[‚hed·ə·rō′tō·pē·ə] (ecology) An abnormal habitat. (medicine) Displacement of an organ or other body part from its natural position.

Heterotopia

a change in position and site of development of an organ in the course of individual ontogeny in animals; one of the methods of evolutionary rearrangement of an organism.

Heterotopia is the result either of the migration of cells from one germ layer to another, of the displacement of cells within a given germ layer, or of the secondary displacement of organs. Examples of heterotopia include the displacement of the heart to the thoracic cavity in birds and mammals (near the head in fish and amphibians) and the translocation of the forelegs to the rear in higher vertebrates (in comparison to the thoracic fins offish). The term “heterotopia” was introduced by the German naturalist E. Haeckel in 1874 to designate disturbances of the phylogenetically determined spatial sequence of the stages of ontogeny. It was subsequently shown that heterotopia does not fit into Haeckel’s interpretation of cenogenesis.

REFERENCES

Severtsov, A. N. Morfologicheskie zakonomernosti evoliutsii. Moscow-Leningrad, 1939.
Miiller, F. and E. Haeckel. “Osnovnoi biogeneticheskii zakon.” Izbr. raboty. Moscow-Leningrad, 1940.

E. N. MIRZOIAN

heterotopia

[het″er-o-to´pe-ah] displacement or misplacement of parts. adj., adj heterotop´ic.

het·er·o·to·pi·a

(het'ĕr-ō-tō'pē-ă), 1. Synonym(s): ectopia2. In neuropathology, displacement of gray matter, typically into the deep cerebral white matter. [hetero- + G. topos, place]

het·er·o·to·pi·a

(het'ĕr-ō-tō'pē-ă) 1. Synonym(s): ectopia. 2. neuropathology Displacement of gray matter, typically into the deep cerebral white matter. [hetero- + G. topos, place]

单词	heterotopia
释义	heterotopia het·er·o·top·ic H0178860 (hĕt′ər-ə-tŏp′ĭk)adj.1. Occurring in an abnormal anatomic location: heterotopic bone formation.2. Grafted or transplanted into an abnormal location: heterotopic liver transplantation. het′er·o·to′pi·a (-tō′pē-ə) n. heterotopia (ˌhɛtərəʊˈtəʊpɪə) or heterotopy n (Pathology) abnormal displacement of a bodily organ or part[C19: from New Latin, from hetero- + Greek topos place] ˌheteroˈtopic, ˌheterˈotopous adj heterotopy, heterotopia, heterotopism a condition in which normal tissue is misplaced, especially in the brain, so that masses of gray matter are found in the white matter. See also biology.. — heterotopous, adj.See also: Brain deviation from the normal ontogenetic sequence with regard to the placing of organs or other parts. Also heterotopism. See also brain. — heterotopous, adj.See also: Biology Heterotopia heterotopia [‚hed·ə·rō′tō·pē·ə] (ecology) An abnormal habitat. (medicine) Displacement of an organ or other body part from its natural position. Heterotopia a change in position and site of development of an organ in the course of individual ontogeny in animals; one of the methods of evolutionary rearrangement of an organism. Heterotopia is the result either of the migration of cells from one germ layer to another, of the displacement of cells within a given germ layer, or of the secondary displacement of organs. Examples of heterotopia include the displacement of the heart to the thoracic cavity in birds and mammals (near the head in fish and amphibians) and the translocation of the forelegs to the rear in higher vertebrates (in comparison to the thoracic fins offish). The term “heterotopia” was introduced by the German naturalist E. Haeckel in 1874 to designate disturbances of the phylogenetically determined spatial sequence of the stages of ontogeny. It was subsequently shown that heterotopia does not fit into Haeckel’s interpretation of cenogenesis. REFERENCES Severtsov, A. N. Morfologicheskie zakonomernosti evoliutsii. Moscow-Leningrad, 1939. Miiller, F. and E. Haeckel. “Osnovnoi biogeneticheskii zakon.” Izbr. raboty. Moscow-Leningrad, 1940. E. N. MIRZOIAN heterotopia heterotopia [het″er-o-to´pe-ah] displacement or misplacement of parts. adj., adj heterotop´ic. het·er·o·to·pi·a (het'ĕr-ō-tō'pē-ă), 1. Synonym(s): ectopia2. In neuropathology, displacement of gray matter, typically into the deep cerebral white matter. [hetero- + G. topos, place] het·er·o·to·pi·a (het'ĕr-ō-tō'pē-ă) 1. Synonym(s): ectopia. 2. neuropathology Displacement of gray matter, typically into the deep cerebral white matter. [hetero- + G. topos, place]
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