E
| Question #3 | ||||
From external to internal, the layers of the tympanic membrane are derived from: A. ectoderm, ectoderm, ectoderm B. ectoderm, endoderm, ectoderm C. ectoderm, endoderm, endoderm D. ectoderm, mesenchyme, ectoderm E. ectoderm, mesenchyme, endoderm
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