Topogenesis of the anterior intestinal port. Microkinematographic investigations on chick embryos.
Morphogenetic movements of the anterior intestinal port of in vitro growing chick embryos were recorded in stages 5--12 by means of microkinematography. Anterior intestinal port moves between stages 7 and 12 by 1.02 mm caudally, while the cranial end of the head migrates by 0.45 mm cranially. Rate of descensus, which is high during stages 7--9, decreases continually, approaching 0 in stage 12. The results are discussed in connection with the formation of intestinal port and of foregut.
D000818:Animals; D002465:Cell Movement; D002642:Chick Embryo / Q000502:physiology*; D004064:Digestive System / Q000196:embryology*; D013997:Time Factors