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37. Indicate the embryonic origin of each tissue.
Developmental Aspects
---Primary germ layers: ectoderm, mesoderm, and endoderm
---Three layers of cells formed early in embryonic development
---Specialize to form the four primary tissues
---Nerve tissue arises from ectoderm
---Muscle, connective tissue, endothelium, and mesothelium arise from mesoderm
---Most mucosae arise from endoderm
---Epithelial tissues arise from all three germ layers