Early Development of the Shoulder Girdle and Sternum in Marsupials (Mammalia: Metatheria) /
This volume is based on investigations in the extensive Hill Collection from the Hubrecht Laboratory, International Embryological Institute, Utrecht. More than 100 serial sections of 11 species were investigated and represent the most complete source material ever compiled for such a purpose. For th...
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| Format: | eBook |
| Language: | English |
| Published: |
Berlin, Heidelberg :
Springer Berlin Heidelberg,
1987.
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| Series: | Advances in anatomy, embryology, and cell biology ;
109. |
| Subjects: | |
| Online Access: | Connect to the full text of this electronic book |
| Summary: | This volume is based on investigations in the extensive Hill Collection from the Hubrecht Laboratory, International Embryological Institute, Utrecht. More than 100 serial sections of 11 species were investigated and represent the most complete source material ever compiled for such a purpose. For the first time it is possible to describe the morphogenesis of the marsupial breast-shoulder apparatus not only through single developmental stages, but also as a continual process. The breast-shoulder apparatus forms a compact arch in the intrauterine embryos and in the neonates, respectively. In the pouch young, this arch is reduced soon after birth. This early formation on a skeletal base is made possible by the fact that in marsupial embryogenesis some ancestral structures persist that are encountered in reptiles and in monotremes, but not in advanced placentals. This genetically determined early embryonic condition is preserved up to the time of birth and plays a role in the active movements of the fore-limbs in neonates during birth. |
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| Item Description: | Electronic resource. |
| Physical Description: | 1 online resource (vii, 91 pages 33 illustrations) |
| ISBN: | 9783642729942 (electronic bk.) 3642729940 (electronic bk.) |
| ISSN: | 0301-5556 ; |