Blastocoel
Blastocoel
Blastocoel (pronounced: /ˈblæstəsiːl/), also known as the blastocyst cavity, is a crucial structure that forms during the early stages of embryonic development.
Etymology
The term "Blastocoel" is derived from the Greek words "blastos" meaning "sprout" and "koilos" meaning "cavity".
Definition
The Blastocoel is a fluid-filled cavity that forms in the blastula stage of embryonic development. It is surrounded by a single layer of cells known as the blastomeres. The Blastocoel is not filled with cells but contains a watery fluid that provides the blastula with structural integrity.
Function
The Blastocoel plays a significant role in gastrulation, a phase of embryonic development where the blastula is reorganized into a multilayered structure known as the gastrula. The Blastocoel's fluid pressure aids in the invagination of cells during gastrulation, helping to form the endoderm, mesoderm, and ectoderm layers.
Related Terms
- Blastula: The embryonic stage where the Blastocoel forms.
- Blastomeres: The cells surrounding the Blastocoel.
- Gastrulation: The process where the blastula reorganizes into a gastrula.
- Endoderm, Mesoderm, and Ectoderm: The three primary germ layers formed during gastrulation.
External links
- Medical encyclopedia article on Blastocoel
- Wikipedia's article - Blastocoel
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