Blastocoele
Blastocoele
Blastocoele (pronounced: /ˈblæstəsiːl/), also known as blastocoelic cavity or blastocyst cavity, is a crucial structure that forms during the early stages of embryonic development.
Etymology
The term "Blastocoele" is derived from the Greek words "blastos" meaning "sprout" and "koilos" meaning "cavity".
Definition
The Blastocoele is a fluid-filled cavity that forms in the blastula stage of embryonic development. It is located inside the blastomeres, which are the cells of the blastula. The formation of the Blastocoele is a critical step in the process of gastrulation, which leads to the formation of the three primary germ layers: the ectoderm, mesoderm, and endoderm.
Function
The Blastocoele plays a significant role in the process of cell differentiation and organogenesis. It allows for the spatial rearrangement of cells that is necessary for gastrulation and the formation of the germ layers. The fluid within the Blastocoele also helps to protect the embryo from mechanical stress.
Related Terms
- Blastula: The stage of embryonic development during which the Blastocoele forms.
- Blastomere: The cells that make up the blastula and surround the Blastocoele.
- Gastrulation: The process during which the germ layers form.
- Germ layer: The three primary layers of cells in the embryo that give rise to all tissues and organs.
- Ectoderm: The outermost germ layer.
- Mesoderm: The middle germ layer.
- Endoderm: The innermost germ layer.
External links
- Medical encyclopedia article on Blastocoele
- Wikipedia's article - Blastocoele
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