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what does the external auditory canal consists of?
what is the ishtmus?
what is the ishtmus?
Outer 1/3 cartilagenous, medial 2/3 bony
Outer 1/3 has hair, sebaceous glands and ceruminous glands
Medially ends in tympanic membrane
Narrowest part is few mm. from T.M.- called Isthmus
