notochord
/noh-tuh-kawrd/US // ˈnoʊ təˌkɔrd //UK // (ˈnəʊtəˌkɔːd) //
脊柱,脊柱骨,脊梁骨,脊索
Definitions
n.名词 noun
- 1
Embryology.
- : a rodlike cord of cells that forms the chief axial supporting structure of the body of the lower chordates, as amphioxus and the cyclostomes, and of the embryos of the vertebrates.
Examples
Moreover, both these authors, as also His, seem to have mistaken the opaque streak spoken of above for the notochord.
This, however, is not the case, and the notochord does not make its appearance till somewhat later.
The notochord (ch) has begun to be formed, though its separation from the rest of the mesoblast is not as yet very distinct.
So that it is clear that the medullary streak is not the notochord, as was thought to be the case by the authors above mentioned.
In fig. 7b, the most anterior of the two, the notochord has become quite separated from the hypoblast.
Level 5Browse all words →