Built in 1922 at a cost of $1.3 million and refurbished in 2001 for slightly more than $194 million, the horseshoe-shaped stadium is a monument to college football. As part of the renovation, the once portable South Stands became a permanent fixture.
Blastopore. A blastopore is an opening into the archenteron during the embryonic stages of an organism. The distinction between protostomes and deuterostomes is based on the direction in which the mouth (stoma) develops in relation to the blastopore.uring maturation of some animals it evolves into the anus or the mouth; in others it is covered over and contributes to the canal joining the primitive gut with the cavity of the neural tube, the primitive nervous system. blastopore synonyms. blastopore usage examples and blastopore quotes.
The blastula is usually a spherical layer of cells (the blastoderm) surrounding a fluid-filled or yolk-filled cavity (the blastocoel). Mammals at this stage form a structure called the blastocyst, characterized by an inner cell mass that is distinct from the surrounding blastula.The blastocyst must not be confused with the blastula; even though they are similar in structure, their cells have different fates. Polar proliferation-Cells at the polar ends of the blastula/gastrula proliferate, mostly at the animal pole. 2  Other major changes during gastrulation: 3  Heavy RNA transcription using embryonic genes; up to this point the RNAs used were maternal (stored in the unfertilized egg).