About: Neural groove

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The neural groove is a shallow median groove of the neural plate between the neural folds of an embryo. The neural plate is a thick sheet of ectoderm surrounded on either side by the neural folds, two longitudinal ridges in front of the primitive streak of the developing embryo. The groove gradually deepens as the neural folds become elevated, and ultimately the folds meet and coalesce in the middle line and convert the groove into a closed tube, the neural tube or canal, the ectodermal wall of which forms the rudiment of the nervous system.

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  • El Solc neural, en anglès:Neural groove, és el canal produït després de l'etapa de gastrulació en l'embrió, que donarà lloc a la formación del tub neural. És un solc poc profund situat entre els plecs neurals i un embrió. La formació d'aquest solc s'esdevé de la manera següent: Després de la formació de la , situada en l'eix antero-posterior del disc embrionari per sota de l'ectoderma i per damunt de l'endoderma, les cèl·lules que la componen proliferan formant un cordó que recorre longitudinalment l'eix mitjà dels disc trilaminar constituint així la notocorda. Una vegada format l'ectoderma que el recobreix augmenta el seu gruix formant la placa neural que s'estén cap a la línia primitiva. A la tercera setmana les vores laterals es pleguen formant els plecs neurals i la porció mitjana forma el solc neural. Aquests plecs s'acosten a la línia mitjana, es fusionen en la regió del coll futui avancen en direcció cefàlica i caudal formant el tub neural. (ca)
  • Se le conoce como surco neural, al canal producido después de la etapa de gastrulación en el embrión, que dará lugar a la formación del tubo neural. La formación del surco sucede del siguiente modo: Después de la formación de la lámina notocordal situada en el eje antero-posterior del disco embrionario por debajo del ectodermo y por encima del endodermo, las células que la componen proliferan formando un cordón que recorre longitudinalmente el eje medio del disco trilaminar constituyendo así la notocorda. Una vez formada la notocorda, el ectodermo que la recubre aumenta de grosor formando la placa neural que se extiende hacia la línea primitiva. A la tercera semana los bordes laterales se pliegan formando los pliegues neurales y la porción media forma el surco neural. Estos pliegues se acercan a la línea media, se fusionan en la región del futuro cuello, y avanzan en dirección cefálica y caudal formando el tubo neural. * Datos: Q2267382 (es)
  • The neural groove is a shallow median groove of the neural plate between the neural folds of an embryo. The neural plate is a thick sheet of ectoderm surrounded on either side by the neural folds, two longitudinal ridges in front of the primitive streak of the developing embryo. The groove gradually deepens as the neural folds become elevated, and ultimately the folds meet and coalesce in the middle line and convert the groove into a closed tube, the neural tube or canal, the ectodermal wall of which forms the rudiment of the nervous system. After the coalescence of the neural folds over the anterior end of the primitive streak, the blastopore no longer opens on the surface but into the closed canal of the neural tube, and thus a transitory communication, the neurenteric canal, is established between the neural tube and the primitive digestive tube. The coalescence of the neural folds occurs first in the region of the hind-brain, and from there extends forward and backward; toward the end of the third week the front opening (anterior neuropore) of the tube finally closes at the anterior end of the future brain, and forms a recess which is in contact, for a time, with the overlying ectoderm; the hinder part of the neural groove presents for a time a rhomboidal shape, and to this expanded portion the term sinus rhomboidalis has been applied. Before the neural groove is closed a ridge of ectodermal cells appears along the prominent margin of each neural fold; this is termed the neural crest or ganglion ridge, and from it, the spinal and cranial nerve ganglia and the ganglia of the sympathetic nervous system are developed. By the upward growth of the mesoderm the neural tube is ultimately separated from the overlying ectoderm. The cephalic end of the neural groove exhibits several dilatations, which, when the tube is closed, assume the form of three vesicles; these constitute the three primary cerebral vesicles and correspond respectively to the future fore-brain (prosencephalon), midbrain (mesencephalon), and hind-brain (rhombencephalon). The walls of the vesicles are developed into the nervous tissue and neuroglia of the brain, and their cavities are modified to form their ventricles. The remainder of the tube forms the medulla spinalis or spinal cord; from its ectodermal wall, the nervous and neuroglial elements of the medulla spinalis are developed while the cavity persists as the central canal. (en)
  • La gouttière neurale est le sillon qui se forme par invagination de la plaque neurale au cours de la neurulation de l'embryon chez les Chordés. Cette invagination soulève les bords de la plaque neurale qui s'épaississent en bourrelets neuraux : ces deux bords du neuroectoderme se rapprochent et s'unissent ensuite jusqu'à former le tube neural. Elle correspond à l'étape intermédiaire de la neurulation qui comporte 3 stades : plaque neurale, gouttière neurale et tube neural. (fr)
  • Nel processo di sviluppo di un embrione di un vertebrato, la doccia neurale è lo stadio successivo a quello di placca neurale durante la prima fase del processo di neurulazione. Consiste in un'invaginazione molto evidente della placca neurale verso l'interno della gastrula (che a questo punto prende il nome di neurula) e si presenta come un sacchetto con la concavità rivolta verso l'esterno e la convessità verso l'interno della gastrula. (it)
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  • Human embryo—length, 2 mm. Dorsal view, with the amnion laid open. X 30. (en)
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  • sulcus neuralis (en)
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  • Neural groove (en)
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  • La gouttière neurale est le sillon qui se forme par invagination de la plaque neurale au cours de la neurulation de l'embryon chez les Chordés. Cette invagination soulève les bords de la plaque neurale qui s'épaississent en bourrelets neuraux : ces deux bords du neuroectoderme se rapprochent et s'unissent ensuite jusqu'à former le tube neural. Elle correspond à l'étape intermédiaire de la neurulation qui comporte 3 stades : plaque neurale, gouttière neurale et tube neural. (fr)
  • Nel processo di sviluppo di un embrione di un vertebrato, la doccia neurale è lo stadio successivo a quello di placca neurale durante la prima fase del processo di neurulazione. Consiste in un'invaginazione molto evidente della placca neurale verso l'interno della gastrula (che a questo punto prende il nome di neurula) e si presenta come un sacchetto con la concavità rivolta verso l'esterno e la convessità verso l'interno della gastrula. (it)
  • El Solc neural, en anglès:Neural groove, és el canal produït després de l'etapa de gastrulació en l'embrió, que donarà lloc a la formación del tub neural. És un solc poc profund situat entre els plecs neurals i un embrió. La formació d'aquest solc s'esdevé de la manera següent: (ca)
  • Se le conoce como surco neural, al canal producido después de la etapa de gastrulación en el embrión, que dará lugar a la formación del tubo neural. La formación del surco sucede del siguiente modo: Después de la formación de la lámina notocordal situada en el eje antero-posterior del disco embrionario por debajo del ectodermo y por encima del endodermo, las células que la componen proliferan formando un cordón que recorre longitudinalmente el eje medio del disco trilaminar constituyendo así la notocorda. Una vez formada la notocorda, el ectodermo que la recubre aumenta de grosor formando la placa neural que se extiende hacia la línea primitiva. A la tercera semana los bordes laterales se pliegan formando los pliegues neurales y la porción media forma el surco neural. Estos pliegues se ace (es)
  • The neural groove is a shallow median groove of the neural plate between the neural folds of an embryo. The neural plate is a thick sheet of ectoderm surrounded on either side by the neural folds, two longitudinal ridges in front of the primitive streak of the developing embryo. The groove gradually deepens as the neural folds become elevated, and ultimately the folds meet and coalesce in the middle line and convert the groove into a closed tube, the neural tube or canal, the ectodermal wall of which forms the rudiment of the nervous system. (en)
rdfs:label
  • Solc neural (ca)
  • Surco neural (es)
  • Gouttière neurale (fr)
  • Doccia neurale (it)
  • Neural groove (en)
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  • Neural groove (en)
  • sulcus neuralis (en)
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