How To Use blastopore In A Sentence
- Now, when random samples were taken from the whole surface of the gastrula and transplanted in this way in an indifferent place it became apparent that a limited area, namely the region of the upper and lateral blastopore lip did not conform. Hans Spemann - Nobel Lecture
- The wall of the planula is next pushed in on one side, or invaginated, whereby it is converted into a double-walled sac with an opening, the _blastopore_, which leads into the cavity lined by the inner wall. Darwiniana : Essays — Volume 02
- The inner layer we call the entoderm, the outer the ectoderm; and the "primitive mouth" is known as the blastopore. The World's Greatest Books — Volume 15 — Science
- In order to test this, a portion of upper blastopore lip at the beginning of gastrulation (head-organizer) and one from an advanced and mature gastrula (trunk-organizer) were transplanted in the same place in an early gastrula, i.e. at the site where the lower blastopore lip would later develop; this was done also at different sites - in the head and trunk areas. Hans Spemann - Nobel Lecture
- A sagittal section of approximately this stage, shown in figure 1A, represents the foregut, _fg_, as a shallow enclosure of the anterior region of the entoderm, while the wide blastopore, _blp_, connects the region of the hindgut with the exterior. Development of the Digestive Canal of the American Alligator
- The primordium of the central nervous system originates in the ectoderm of the dorsal surface, starting from the blastopore and coming forward as a thickened plate shaped like a shield with its anterior half broader than its posterior. Hans Spemann - Nobel Lecture
- From this Spemann could ascertain that the blastopore had an organizing influence on its environment. Physiology or Medicine 1935 - Presentation Speech
- You can see the early scrambling of cells in the blastula, migration during epiboly and blastopore closure, and convergence in the formation of the body axis fairly easily. Planet Atheism
- Classical studies revealed that nemertean embryos exhibit spiral cleavage and that the mouth forms at or near the site of the blastopore, but aspects of cell lineage, especially origin of the mesoderm, proved problematic.
- Upper blastopore lip still engaged in invagination was implanted in a different orientation in relation to the host embryo - crosswise and opposite to the orientation of the later primary primordia. Hans Spemann - Nobel Lecture