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What is The auricle develops from: and explain in detail?
Ans. (d) 1st and 2nd branchial archRef: P.L. Dhingra 6th ed. /11* The auricle develops from fusion of mesenchyme of 1st and 2nd branchial arch.* External ear canal develops from the ectoderm of 1st branchial cleft.* Tympanic membrane is derived from all the three germ layers contributed by 1st pharyngeal/ branchial arch.