Summary
-
1.
The mesencephalic borders in the chick have been analysed and reconstructed. It is stated that the di-mesencephalic border corresponds to the border between postneuromeres 5 and 6, and the mes-rhombencephalic border with the border between postneuromeres 7 and 8.
-
2.
The migration areas have been carefully analysed and reconstructed.
-
3.
The ontogenesis of the mesencephalic brain nuclei has been traced from migration areas by means of reconstructions of successive series of stages. Some facts may be taken into consideration: a) The pretectal nuclear complex originates from the diencephalic region, close to the di-mesencephalic border, and during its expansion this nuclear complex passes the di-mesencephalic border, so the nuclei come to lie in both the diencephalic and mesencephalic regions. b) Some mesencephalic nuclei originate from a mixed cell material of different migration areas. Brain nuclei from a mixed cell material seem to be: the nucleus mesencephalicus lateralis, the nucleus isthmii, pars principalis complex, the nucleus of the basal optic root, the nuclei of the lateral genicular complex.
-
4.
The mesencephalic anatomical topography is seen to change as follows: The optic tectum starts a rotation caudorostrally; it divides into two separate lobes, which are pushed away laterally along the tegmental sides. The tegmentum expands very greatly and there is tegmental axial straightening. The agueduct comes to lie horizontally.
Similar content being viewed by others
References
Ariëns Kappers, C. U.: The comparative anatomy of the nervous system of vertebrates including man. New York: 1960.
Bergquist, H.: Ontogenesis of diencephalic nuclei in vertebrates. Lunds Univ. Årsskr. Avd. 2. 65, 1–34 (1954).
Bergquist, H.: Die Entwicklung des Diencephalons im Lichte neuer Forschung. Progr. Brain Res. 5, 223–229 (1964).
Elias, S., Bergquist, H.: Eine biostatistische Beschreibung der Entwicklung der Gehirnblasen des Hühnerembryos. Rev. Roum. d'Embr. Cyt. 6, 1–10 (1969).
Hamburger, V., Hamilton, H. L.: A series of normal stages in the development of the chick embryo. J. Morph. 88, 49–92 (1951).
Hugosson, R.: Morphologic and experimental studies on the development and significance of the rhombencephalic longitudinal cell columns. Thesis. Lund, Sweden 1957.
Jungherr, E.: Certain nuclear groups of the avian mesencephalon. J. comp. Neurol. 82, 55–73 (1945).
Kuhlenbeck, H.: The development and structure of the pretectal cell masses in the chick. J. comp. Neurol. 71, 361–385 (1939).
Källén, B.: Organogenesis of the cerebral nervous system. Haan & Ursprung. New York (1963).
Mestag, T. M.: Beitrag zur Entwicklungsgeschichte der Hirnstructure beim Embryo des Hühnchens. Groeningen: M. de Waal 1909.
Niimi, K., Sakai, T., Takasu, J.: The ontogenetic development of the oculomotor nucleus in the chick. Tokushima. J. exp. Med. 5, 311–325 (1959).
Palmgren, A.: Embryological and morphological studies on the midbrain and cerebellum in vertebrates. Acta zool. 2, 1–94 (1921).
Rendahl, H.: Embryologische und morphologische Studien über das Zwischenhirn beim Huhn. Acta zool. 5, 241–344 (1924).
Urra, M. P.: Über die embryonale Entwicklung des Oculomotoriuskernes. Albrecht v. Graefes Arch. Ophthal. 107, 123–147 (1922).
Vaage, S.: The segmentation of the primitive neural tube in chick embryos (Gallus domesticus). Erg. Anat. Entw.-gesch. 41, 1687 (1969).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Braun-Jacobson, A. Development of mesencephalic nuclei in the chick embryo (Gallus domesticus). Z. Anat. Entwickl. Gesch. 135, 317–336 (1972). https://doi.org/10.1007/BF00519042
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00519042