Body Folding

5. The intraembryonic coelom later gives rise to the ___, pleural, and pericardial cavities
6. layer of lateral plate mesoderm adjacent to the endoderm
10. Embryonic structure that forms the gut tube
11. The amnion moves in this direction during lateral folding
13. Membrane that eventually becomes the mouth opening
14. Anatomical direction meaning "toward the back"
15. Direction in which the primordial heart tube moves during folding

1. The outermost germ layer
2. Membrane that forms from the fusion of amnion and chorion
3. Anatomical direction meaning "toward the belly"
4. Layer of lateral plate mesoderm adjacent to the ectoderm
7. Longitudinal body fold occurring along the head-to-tail axis
8. Folding that brings the sides of the embryo together, forming a tube-like shape
9. Intraembryonic " ", cavity formed by lateral plate mesoderm splitting
12. Bending of the cranial region of the embryo during early development