blastopore, the opening by which the cavity of the gastrula, an embryonic stage in animal development, communicates with the exterior. During 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 ...

In amniotes (reptiles, birds and mammals), gastrulation involves the creation of the blastopore, an opening into the archenteron. Note that the blastopore is not an opening into the blastocoel, the space within the blastula, but represents a new inpocketing

Blastopore means a mouth-like opening of the archenteron on the surface of the embryo during the invagination of the archenteron. In many animals, the Blastopore becomes the anus, but it may close at the end of the archenteron invagination and reappear at or near the same site.

The blastopore is the region through which the cells that will form the endoderm and mesoderm layers of the embryo invaginate. The cells that remain on the outside form the third germ layer, the ectoderm.

In the early stages of an embryo's development, the blastopore is the opening of the central cavity through which the gastrula communicates with the exterior. [1]

The blastopore can be a discrete "hole" in the embryo that elongates (called an archenteron) as in the case of sea urchins (Figure 7), or it can be a broad lip of cells that narrows as epibolizing cells expand as in frogs and snails (Figures 5 and 8).

The meaning of BLASTOPORE is the opening of the archenteron.

The blastopore lip is made up of progeny derived from each of the second and third quartet micromeres that give rise to ectoderm exclusively (Figs. 14 and 16, dashed white line). This boundary between ectoderm and endoderm was defined through our detailed lineage analysis during gastrulation stages.

blastospore and other structures of Candida albicans Candida pseudohyphae, chlamydospores and blastospores.. A blastospore is an asexual fungal spore produced by budding.Produced by fungi within the phylum Glomeromycota and others. It is also known as a blastoconidium (plural = blastoconidia).. An example of a fungus that forms blastospores is Candida albicans.

blastopore The opening of the archenteron, the primitive gut, to the outside, formed by invagination of cells on the embryo’s surface which form the mesoderm and endoderm during during gastrulation.