EAR Flashcards
Name the part that is filled with air
Eustachian Tube
Name the part that contains the organ of corti
Cochlea
Why would build up of ear wax in the tympanic membrane may result in temporary hearing loss?
-Tympanic membrane will not be able to vibrate
-less vibrations will be carried to the middle ear
Explain how the use of grommets in the treatment of middle ear infections prevents hearing loss
-the grommets will release the pressure that will build up
-preventing the tympanic membrane from rupturing
-allows ossicles to vibrate freely
Explain how the damage to the auditory nerve could affect hearing
-Pressure waves will not be converted to an impulse
-this will lead to hearing loss
Receptors in the auditory nerve
Organ of corti
Describe how infection in the middle ear may lead to pain in the ear?
-eustachian tube will be blocked
-Pressure will not be equalised
-causing pressure build up in the middle ear, causimg pain
Transmits impulses to the brain
Auditory nerve
Produces wax
Ear canal
Has structures that are arranged at right-angles to each other
Semi-circular canals
Describe the role of the middle ear in equalising air pressure
The Eustachian tube allows air to move into and out the middle ear
The collective term for the bones in the middle of the ear
Ossicles
Equalises pressure between outer and middle ear
Eustachian tube
Creates pressure waves in the inner ear
Oval window
Name he receptors that are stimulated by a change in the position of the head
Maculae
Name the receptors stimulated by a change in the direction and speed of movement of the head
Cristae
Name the small device that is used in the treatment of middle ear infection
Grommet
Where is a grommet inserted
Eardrum/tympanic
Describe the role of the Eustachian tube
It equalises pressure on either side of the tympanic membrane
