Der praegravide Genitaltrakt und die Praeimplantation

Feremutsch, Kurt

doi:10.5962/bhl.part.117897

Cited by 5 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Elephantulus, van der Horst & Gillman (1942), van der Horst (1950) Fig. 7 uterus with 32-celled stage, Ericulus hemicentetes- Feremutsch 1948). Here the reaction would seem to be induced by a maternal endocrine secretion.…”

Section: Final Conclusionmentioning

confidence: 94%

On the placentation of Tupaia

Hill¹

1965

Proceedings of the Zoological Society of London

View full text Add to dashboard Cite

The placentation of Tupaia is of particular interest for two main reasons, first because of the suggested relationship of the Tree shrews (Tupaiidae) to the Lemuroidae—a relationship which has been much discussed and on which widely divergent views have been expressed—and second because Tupaia is the only mammal so far described in which the foetus is provided with a double (so called bidiscoidal) placenta of the entothelial chorial type. The placental sites are easily recognizable in the virgin uterus as two localized areas of the endometrium, respectively dorsal and ventral, and characterized by the absence of uterine glands. On pregnancy supervening the endometrium of each site undergoes a marked decidual reaction forming the maternal component of (1) a temporary omphalopleural (yolk sac) placenta—the foetal component of which is furnished by the vascular omphalopleure—and of (2) the definitive allantoic placenta. The allantois growing down as a flattened lobe on either side and penetrating between the attached trophoblast of the vascular omphalopleure and its mesodermal and endothelial layers ensuring the replacement of the vitelline vessels of the vascular omphalopleure by the allantoic vessels and thus forming a relatively simple labyrinthine endothelio chorial placenta.

show abstract

Section: Final Conclusionmentioning

confidence: 94%