Hence it was called by earlier embryologists the "vascular layer.
This law is widely and increasingly accepted by embryologists and zoologists.
Vertebrata of its being preceded by gastrulation; so that, even as to the higher Vertebrata, embryologists are pretty well agreed that delamination has been but a later development of, or possibly improvement upon, gastrulation.
Most embryologists neglect paleontology, most paleontologists embryology, while comparative anatomy, the most difficult part of morphology, involving most extensive knowledge and sound judgment, is neglected by both.
Many of these experimental embryologists have drawn far-reaching conclusions from their somewhat narrow experiments, and have partly urged them as objections to Darwinism.
However, they misled a few embryologists by opening the way to a direct and purely mechanical explanation of the complex embryonic phenomena.
Many distinguished cytologists, histologists, and embryologists have completely lost the larger view of their work by absorption in these details.
This is especially the case with many physiologists who look upon experiment as the only exact method of investigation, and many embryologists who think their sole task is description.
This suggestion fell to the ground because it was held by embryologiststhat the cleavage of the ovum resulted in the formation of completely separate cells, and that the connexions between the adult cells were secondary.
Great importance has been attached to this generalization by embryologists and naturalists, and it is very widely accepted.
Instances of this kind might be multiplied, for the work of anatomists and embryologists has of late years been largely devoted to adding to them.
Thus certain embryologistssupposed that this layer corresponded to the reproductive organs of primitive animals: others regarded it as the prototype of the organs of locomotion.
Many Embryologists will indeed probably hold that any attempt to do so at the present time is premature, and therefore doomed to failure.
The prominence itself with the enclosed portion of the spindle becomes constricted off from the egg to form a body, well known to embryologists as the polar body or cell (fig.
Embryologists soon become aware that a similar distinction between a primitive cartilaginous foundation and a secondary overlying ossification of the skull showed itself in the development of all Vertebrates.
So, too, the embryologists after Cuvier often came across instances of the special formation of parts to meet temporary needs.
The embryologists were not slow to see that their work threw much light upon questions of homology, and upon the problem of the unity of plan.
All embryologists who have studied the embryos of the various vertebrate groups have been struck with the remarkable similarity which exists between them, more especially as concerns the form of the head.
Koelliker, Huxley and other embryologists believe however that these muscles are independent of the muscle-plates in their origin.
The stomodaeum of Petromyzon is surprisingly large, and its size and structure in this type militate against the view of some embryologists that the stomodaeum originated from the coalescence of a pair of branchial pouches.
He attempts to explain the contradictory observations of other embryologists by supposing that they have mistaken the ventral ends of visceral pouches for an unpaired outgrowth of the throat.
One of these views, generally held by embryologists and adopted in the previous pages, is that the Elasmobranch embryo arises from a differentiation of the edge of the blastoderm; which extends inwards from the edge for some little distance.
The protovertebrae of most embryologists will be spoken of as mesoblastic somites.
We now know that these limitations of Von Baer do not hold good, but it is to be remembered that the meaning now attached by embryologists to such resemblances was quite unknown to him.
Koelliker and other distinguished embryologists have believed that the epiblast of the whole of the primitive streak became part of the neural plate.
Embryologists are in the main agreed as to the structure of the blastoderm at this stage.
The cells then arrange themselves into two groups or layers known toembryologists as the primary germinal layers.
Various English embryologists had varying success with developmental theory, but as a group they had made great impact upon the development of embryology.
Withal, the seventeenth-century embryologists, and particularly the embryologists of seventeenth-century England, had contributed much to the progress of the discipline.
Embryologists imitate known natural teratological states of the nerve centres by artificial methods.
As Dareste has shown (and the fact has been corroborated by Spitzka[99]), embryologists can imitate natural malformation of the nerve centres by artificial methods.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "embryologists" in a variety of sentences. We hope that you will now be able to make sentences using this word.
