Note: All three germ layers are derived from the epiblast.
| ENDODERM | epithelial lining of respiratory and GI tract |
| MESODERM | cardiovascular system, reproductive/excretory organs, smooth and striated muscle, connective tissues, vessels, skeleton |
| ECTODERM |
SURFACE ECTODERM - epidermis, and other external structures NEUROECTODERM - central and peripheral nervous system, neural crest cells and derivatives |
NOTE: Epithelium is derived from all three germ layers - ex. endoderm - epithelial lining inside viscera, mesoderm - mesothelium lining outside of viscera, and ectoderm - skin epithelium
