Trilaminar blastocyst
A trilaminar embryo (or trilaminary blastoderm, or trilaminar germ disk) is an early stage in the development of triploblastic organisms, which include humans and many other animals.
| Trilaminar blastocyst | |
|---|---|
| Details | |
| Identifiers | |
| Latin | blastocystis trilaminaris |
| TE | E6.0.1.1.4.0.1 |
| Anatomical terminology | |
It is an embryo which exists as three different germ layers - the ectoderm, the mesoderm and the endoderm. These layers are arranged on top of each other like a stack of paper, giving rise to the name trilaminar, or "three-layered".
These three layers arise early in the third week (after gastrulation) from the epiblast (a portion of the mammalian inner cell mass).
External links
- Swiss embryology (from UL, UB, and UF) hdisqueembry/triderm01
- Embryology at UNSW Notes/week3_4
- Overview at edu.mt
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