In the development of the human embryo, the intraembryonic coelom (or somatic coelom) is a portion of the conceptus forming in the mesoderm during the third week of development.[1] During the third week of development, the lateral plate mesoderm splits into a dorsal somatic mesoderm (somatopleure) and a ventral splanchnic mesoderm (splanchnopleure). The resulting cavity between the somatopleure and splanchnopleure is called the intraembryonic coelom. This space will give rise to the thoracic and abdominal cavities. The coelomic spaces in the lateral mesoderm and cardiogenic area are isolated. The isolated coelom begins to organize into a horseshoe shape. The spaces soon join together and form a single horseshoe-shaped cavity: the intraembryonic coelom. It then separates the mesoderm into two layers.[2]
| Intraembryonic coelom | |
|---|---|
| Details | |
| Days | 23 |
| Precursor | Lateral plate mesoderm |
| Gives rise to | Pericardial cavity, pleural cavity, peritoneal cavity |
| Identifiers | |
| Latin | coeloma intraembryonicum |
| TE | coelom_by_E5.8.0.0.2.0.1 E5.8.0.0.2.0.1 |
| Anatomical terminology | |
It briefly has a connection with the extraembryonic coelom.
See also
editReferences
edit- ^ "Coelomic cavity development". Retrieved 2 October 2021.
- ^ Kumar, Rani (31 January 2008). Textbook of Human Embryology. I. K. International Pvt Ltd. ISBN 9788190675710. Retrieved 2 October 2021.
External links
edit- http://www.embryology.ch/anglais/hdisqueembry/triderm09.html Archived 2016-03-02 at the Wayback Machine
- https://web.archive.org/web/20071016082700/http://embryology.med.unsw.edu.au/Notes/coelom.htm
- https://web.archive.org/web/20070718112630/http://www.ana.ed.ac.uk/database/humat/notes/embryo/cavities/coelom.htm
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