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Tissues. Definition: Collections of cells and extracellular materials that perform specific functions. Intercellular Connections Gap junctions Tight junctions Intermediate junctions and desmosomes . Early Embryonic Tissue: the Primary Germ Layers Ectoderm Mesoderm Endoderm .
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Tissues • Definition: Collections of cells and extracellular materials that perform specific functions
Intercellular Connections • Gap junctions • Tight junctions • Intermediate junctions and desmosomes
Early EmbryonicTissue: the Primary Germ Layers • Ectoderm • Mesoderm • Endoderm
Primary Tissue Types (Derived from the Embryonic Tissue) • Epithelial Tissue • Connective Tissue • Muscle Tissue • Neural Tissue • (click here for embryonic/fetal development animation)