Blastocoele

The blastocoel (), also spelled blastocoele and blastocele, and also called cleavage cavity, or segmentation cavity is a fluid-filled or yolk-filled cavity that forms in the blastula during very early embryonic development. At this stage in mammals the blastula is called the blastocyst, which consists of an outer epithelium, the trophectoderm, enveloping the inner cell mass and the blastocoel.

In the Vinony graph

Within Vinony's link graph, Blastocoele is referenced by 113 other articles, and connects out to gastrulation, cleavage and primitive streak.

It is catalogued under the topic Animal developmental biology.

Its subject is documented across 22 Wikipedia language editions.

Key facts

Embryology.Name: Blastocoel
Embryology.Image: Blastocyst_-_2.png
Embryology.Caption: Mammalian blastocoel
Embryology.Image2: Diagram of Blastocyst stage.png
Embryology.Caption2: Schematic diagram showing the blastocyst, with its embryoblast (inner cell mass) and its trophoblast layer, alongside the surface of the endometrium.
Embryology.CarnegieStage: 3
Embryology.Days: 5
Embryology.Precursor: Morula
Embryology.GivesRiseTo: Gastrula, primitive yolk sac

via Wikipedia infobox

Wikidata facts

Part of: blastula

Sources (2)

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Encyclopedic overview

10 sections

Contents

In mammals
In amphibians
Damage to blastocoel
In sea urchins
Development of primary mesenchyme
In birds
Formation of primitive streak
In zebrafish
References
Further reading

It develops following cleavage of the zygote after fertilization. It is the first fluid-filled cavity or lumen formed as the embryo enlarges, and is the essential precursor for the differentiated gastrula. In the Xenopus a very small cavity has been described in the two-cell stage of development.

Excerpted from Wikipedia’s “Blastocoele” article, available under the CC BY-SA 4.0 licence.