| 词汇 | endoderm |
| 释义 | BETA Examples of endodermendoderm isn’t in the Cambridge Dictionary yet. You can help! Prior to gastrulation, cells of the three presumptive germ layers-ectoderm, endoderm and mesoderm- have an affinity for hyalin. The trend was in the order yolk sac endoderm epiblast derivatives > placenta. In the elongating blastocyst (day 13) fibronectin was found between the trophectoderm and endoderm cells. Players remain pluripotential like stem cells, yet to make their way toward differentiation as infielders (mesoderm), outfielders (ectoderm), or pitchers or catchers (endoderm). Later the endoderm changes its relative affinity for hyalin as the vegetal plate invaginates to form the archenteron. They are formed by surface ectoderm and pharyngeal endoderm and are populated by paraxial mesoderm and cranial neural crest cells. For instance, skeletal muscle, kidney and spleen are formed of the germ layer mesoderm, whereas the liver originates from the endoderm. This information raises the question of how nodal signaling leads to the induction of both endoderm and mesoderm. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The inner layer of endoderm will serve as the starting point for the development of the lungs, intestine and bladder. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Embryos have three layers: endoderm, mesoderm and ectoderm. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The endoderm allows them to develop true tissue. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Each structure originates form different germinative layers or tissues: the ectoderm, endoderm and mesenchyme. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At this point, there are two layers of cells - the ectoderm (outermost) and the endoderm (innermost) layers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is not a teratoma, however, which is a neoplasm comprising all three germ cell layers (ectoderm, endoderm, mesoderm). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All the more complex animals (from flat worms to humans) are triploblastic with three germ layers (a mesoderm as well as ectoderm and endoderm). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In triploblastic organisms, the three germ layers are called endoderm, ectoderm, and mesoderm. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are only two main germ layers, the ectoderm and endoderm, with only scattered cells between them. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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