Physiology Of Hearing Flashcards
What is the eardrum known as?
Tympanic membrane
What is the role of the ossicles?
Rely and amplify information to the cochlea
What is the role of the cochlea?
An organ where sound waves are converted first into fluid waves, then into chemical signals and finally into action potentials
How to ear hairs allow sound to be heard?
The movement of basilar and tectorial membranes by sound waves moves cilia on the hair cells and effects neurotransmitter release
What allows the AP, what channels?
Potassium and calcium channels
Where would we hear high frequency sounds?
Stapes end of the basilar membrane
What is conductive deafness?
Wax build up
Blockage of Eustachian tube
Inflammation
Damage to ear drum
Otosclerosis
What is sensorineural deafness?
Hair cell damage in organ of corti
What are examples of se sensorineural deafness
Trauma
Ageing
Infection
Drugs
Ménière’s disease
Do hair cells regenerate in mammals?
No
What is the movement associated with the part of the canal?
