Pinna / Auricle

Pinna / Auricle Q. 1 Ear pinna develops from ____________  A Ectoderm  B Endoderm  C Mesoderm  D All  Q. 1 Ear pinna develops from ____________  A Ectoderm  B Endoderm  C Mesoderm  D All  Ans. A Explanation:  Ans:A.)Ectoderm First branchial cleft is the precursor of external auditory canal. Around the sixth week of embryonic life, a […]

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