<prompt> Which of the following statement is true about Pinna except:In Treacher-Collins syndrome malformed pinna may be presentMade up of elastic cailageDevelop from lst pharyngeal cleft onlyHelps in localization of sound  <response>: Ans. c. Develop from lst pharyngeal cleft onlyFirst branchial cleft is the precursor of external auditory canal.Around the sixth week of embryonic life, a series of six tubercles appear around the first branchial cleftBranchial clefts are ectodermal in origin.Pinna develops from 1st and 2nd pharyngeal arch 