Otology3:SpiralganglionofCorti4:SpiralorganofCortiMiddle esr and external ear
Otology
Examination of the ear. The auricle,external auditory canal and thepostaural region are thoroughly inspectedfor the shape and size of the auriclecolorchanges in the skin,swelling,ulcer or aprevious operativescar
Examination of the ear • The auricle,external auditory canal and the postaural region are thoroughly inspected for the shape and size of the auricle,color changes in the skin,swelling,ulcer or a previous operative scar
Methods of examination of the earConventionalapproachOtoscopyExamination withsiegel's speculumExaminationundermicroscope
Methods of examination of the ear • Conventional approach • Otoscopy • Examination with siegel's speculum • Examination under microscope
ConventionalaapproachThe inside of the external canal is examined convenientlyusingaheadmirror,light sourceandanear speculum双手检查法图1-3-158.器m
• Conventional approach • The inside of the external canal is examined conveniently using a head mirror,light source and an ear speculum
让，以免引起疼痛（图1-3-3%图1-3-3双手耳镜检查法图1-3-4单手耳镜检查法