caa a22 4500 477095593 CHVBK 20180405111526.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF00185882 doi (NATIONALLICENCE)springer-10.1007/BF00185882 Chondroid tissue in the early facial morphogenesis of the chick embryo [Elektronische Daten] [B. Lengelé, J. Schowing, A. Dhem] The calcified tissues involved in the early morphogenesis of the so-called intramembranous bones of the facial skeleton were studied by microradiographic and histological techniques in 22 chick embryos at the 9th, 12th and 14 th days of incubation. On the 9th day, the bones of the upper face and palatal vault are made up of thin sheets of chondroid tissue, deposited in their respective mesenchymal condensations. Woven and lamellar bone formation subsequently takes place in each of them from the 12th day of incubation, mainly on the external side of their chondroid primordia. The same phenomena occur in the lower facial and mandibular bones. These facts indicate that the primitive facial desmocranium of the chick embryo, which is classically considered to be formed by intramembranous ossification, first consists of chondroid tissue. As in the cranial vault, this tissue thus represents the initial modality of the skeletogenic differentiation within the avian facial mesenchyme. Springer-Verlag, 1996 Chondroid tissue nationallicence Facial bones nationallicence Intramembranous ossification nationallicence Microradiograph nationallicence Lengelé B. Human Anatomy Research Unit, Faculty of Medicine, University of Louvain, Brussels, Belgium aut Schowing J. Institute of Zoology, Department of Embryology and Experimental Teratology, University of Fribourg, Fribourg, Switzerland aut Dhem A. Human Anatomy Research Unit, Faculty of Medicine, University of Louvain, Brussels, Belgium aut Anatomy and Embryology Springer-Verlag 193/5(1996-05-01), 505-513 0340-2061 193:5<505 1996 193 429 https://doi.org/10.1007/BF00185882 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00185882 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lengelé B. Human Anatomy Research Unit, Faculty of Medicine, University of Louvain, Brussels, Belgium aut NATIONALLICENCE 700 1- Schowing J. Institute of Zoology, Department of Embryology and Experimental Teratology, University of Fribourg, Fribourg, Switzerland aut NATIONALLICENCE 700 1- Dhem A. Human Anatomy Research Unit, Faculty of Medicine, University of Louvain, Brussels, Belgium aut NATIONALLICENCE 773 0- Anatomy and Embryology Springer-Verlag 193/5(1996-05-01), 505-513 0340-2061 193:5<505 1996 193 429 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer