Knowledge Base
Anatomy of ear
- External auditory canal
- Middle ear with ossicles
- Internal ear with vestibular and cochlear systems auditory nerve course
- Physiology of hearing
- Best test of patient's hearing is evaluated using pure tone audiometry
- Weber and Rinne tests
- Diseases causing deafness
- Conductive deafness: Lesion between the receptors and environment (Ossicle lesion, otitis media, otosclerosis, impacted cerumen)
- Nerve deafness: Lesion of the receptors or its pathway (Aging, drug toxicity, noise damage, acoustic neuroma)
- Pathological lesions of middle ear and auditory nerve
- Knowledge of tuning forks
- 125-250 good for checking vibration
- 512 good for checking hearing