Intraembryonic coelom
Intraembryonic coelom is a significant structure that forms during the embryonic development of vertebrates. It is a fluid-filled cavity that separates the visceral and parietal layers of the lateral plate mesoderm. The intraembryonic coelom plays a crucial role in the formation of the body cavities, including the pericardial, pleural, and peritoneal cavities.
Formation[edit | edit source]
The intraembryonic coelom forms during the third week of embryonic development. It begins as small, isolated cavities within the lateral plate mesoderm. These cavities gradually merge to form a single, horseshoe-shaped cavity, the intraembryonic coelom. The coelom is initially continuous with the extraembryonic coelom but becomes separated as the embryo folds.
Function[edit | edit source]
The intraembryonic coelom serves as the primordium for the major body cavities. It divides the lateral plate mesoderm into two layers: the somatic (parietal) mesoderm and the splanchnic (visceral) mesoderm. The somatic mesoderm lines the body wall, while the splanchnic mesoderm surrounds the gut tube. The coelom also provides a space for the developing organs to grow and move.
Clinical Significance[edit | edit source]
Abnormalities in the formation of the intraembryonic coelom can lead to a variety of congenital defects. These include diaphragmatic hernia, congenital heart defects, and abnormalities in the formation of the lungs and abdominal organs.
See Also[edit | edit source]
References[edit | edit source]
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