Blastocoel


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Related to Blastocoel: blastopore, Blastomeres

Blastocoel

 

segmentation cavity, cleavage cavity, primary body cavity, a cavity formed between the blastomeres in the embryo of an animal and filled with a liquid different in chemical composition from the surrounding medium. A blastocoel attains its greatest size towards the end of cleavage in the blastula stage. In the process of gastrulation it is gradually displaced by migrating cellular material.

References in periodicals archive ?
The blastocoels were observed and developed quickly to the gastrula stage within 2 days.
However, there was no sign of a blastocoel, a fluid-filled hole in the centre which is a common feature of modern animal embryos.
Although cleavage divisions were affected only at very high DMAE concentrations, embryos treated with lower concentrations at the two-cell stage subsequently developed malformations (Figure 3): overabundance of mesenchyme-like cells that accumulated first in the vegetal half of the blastocoel, and later occupied all of the blastocoel, blocking or inhibiting gastrulation; absence of a second pair of arms in mid-pluteus, or sometimes shortening or absence of one arm of the first pair (Figure 3H).