Middle Ear Flashcards
What sit he main function for the Middle ear
Transmit vibrations from tympanic mem to inner earn
What are the two parts of the Middle ear
Tympanic cavity
Epitympanic recess
What are the auditory ossicle
Malleus
Incus
Stapes
What do the auditory ossicles connect
The tympanic membrane to the oval window
Where are the mastoid air cells
Posterior to the epitympanic recess
In the Antrum of the mastoid process
How does the mastoid Antrum communicate with the mastoid
Via aditus
What are the two protective muscles of the ear cavity
Stapedius and tensor tympani
What does the stapedius and tensor tympani do
Response to loud noises
Prevent vibrations fo ossicles reducing sound transmission so not damage
What innervates the tensor tympani
v3
What inv the stapedius
Facial nerve
What si the purpose of the Eustachian tube
Equalise the pressure of Middle ear to eam
Where does he Middle ear lie
In temporal bone
Extends from tympanic mem to lateral wall of internal ear
