Sentence examples for surface of the embryo from inspiring English sources
Mesodermal cells migrate from the surface of the embryo to fill the space between the other two tissues through an elongated depression known as the primitive streak.
This sheet thickens and expands and then, in a process called neurulation, folds in on itself to form a hollow tube that pinches off from the surface of the embryo and descends below it.
It starts off as a flat sheet of cells on the top surface of the embryo, called the neural plate, which, through a series of elaborate deformations, buckles and folds in on itself to form a hollow tube.
The consequence is that a section of the dorsal surface of the embryo comes to lie on the ventral surface of the tail; i.e., becomes inflected.
The future ectoderm simply thins out, expands, and covers a greater surface of the embryo in a movement known as epiboly.
After its induction in non-neural ectoderm, the inner ear undergoes morphogenesis, being transformed from a flat ectodermal disk on the surface of the embryo to a hollowed sphere embedded in the head [5 9].
At maturity, the inner seed coat has compressed into a thin layer and attached the embryo tightly, and the surface of the embryo proper fluoresces brightly (arrow).
In the absence of a suspensor, it is logical to speculate that the entire surface of the embryo proper must be able to absorb nutrients directly from surrounding maternal tissues, i.e. the seed coat.
HGCs are distributed on the inner wall of the pharyngeal cavity in pre-hatching embryos of medaka [ 39], or the surface of the embryos of milkfish, loach, catfish, rainbow trout and Pacific cod.
Before dorsal closure, only the ventral and lateral surfaces of the embryo are covered by epidermal cells, whereas the dorsal side is covered by the amnioserosa, a transient tissue that is eventually eliminated.
Though cutaneous glands have diverse forms and roles in the adult, they all initiate development by budding off the surface covering of the embryo, called the ectoderm.
