External ear The external ear consists of auric le耳廓, external acoustic meatus 外耳道 听4青 骨半规哲 内N encephala Oscula auditus Canales semcireuiares ossei /saccus 内M tympanic membrane nexus Duct 鼓膜 养脉 内动脉External ear The external ear consists of auricle耳廓, external acoustic meatus 外耳道 tympanic membrane 鼓膜