AUDIOLOGY. Danielle Billing. Outer Ear The part of the ear that is visible, often called the Pinna, and the ear canal, also called the External Auditory Meatus. Inner Ear The cochlea. The Hearing Mechanism. Middle Ear Consists of the tympanic membrane (eardrum) and the ossicles (bones).
The part of the ear that is visible, often called the Pinna, and the ear canal, also called the External Auditory Meatus
The cochleaThe Hearing Mechanism
Consists of the tympanic membrane (eardrum) and the ossicles (bones)
The nerve responsible for sending/ receiving auditory information
Responsible for processing and interpreting auditory information
HeredityCommon Causes of Hearing Loss
Eustachian tube disfunction
A hearing loss caused by an obstruction or dysfunction of the outer or middle ear
A hearing loss caused by a dysfunction in the inner ear (sensori), or the central processing system (neural)Types of Hearing Loss
Requires the patient to respond to a stimulus
Does not require the patient to respond; responses are unconscious and automatic
Flaccid tympanic membrane
(broken ossicular chain)
Normal Middle Ear
Stiff tympanic membrane
Type B (low)
Type B (high)
Non-patent PE tubes
Patent PE tubes
Negative middle ear pressure
Flaccid: disarticulation, flaccid TM, etc.
Stiff: otosclerosis tympanosclerosis, etc.
…or is it?