Polyingression, an Important Morphogenetic Movement in Chick Gastrulation
نویسندگان
چکیده
منابع مشابه
Gastrulation and homeobox genes in chick embryos
We review the early stages of chick embryogenesis, in particular the formation of the hypoblast, and the ingression of endoderm and mesoderm through the primitive streak. The formation of a trilaminar embryo during gastrulation is accompanied by the specification of body axes. The first axis is already present in the unfertilized egg and runs from the cytoplasmatic animal to the yolk rich veget...
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The skeletal muscles and axial skeleton of vertebrates derive from the embryonic paraxial mesoderm. In amniotes, paraxial mesoderm is formed bilaterally to the nerve cord as a result of primitive streak and tail-bud regression during body axis formation. In chick and mouse embryos, paraxial mesoderm was proposed to derive from a population of resident cells located in the regressing primitive s...
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THE pronephros of the chick is usually considered to be a vestigial organ. It only appears for a short period during early development and it is never functional as an excretory organ. From it, however, the primordium of the Wolffian duct is formed, by the confluence of the segmented pronephric tubules to a continuous strand of cells. This strand lengthens and extends into the posterior part of...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 1984
ISSN: 0003-1569
DOI: 10.1093/icb/24.3.545