The Auditory System Flashcards
What is the function of the Eustachian Tube
Connects the middle ear to the nasopharynx
protects aerates and drains the middle ear
regulates and equalizes middle ear air pressure
what is the ossicular chain
transmits sound
Malleus = hammer
Incus = anvil
Stapes= Stirrups
where is the inner ear located
within the temporal bone
what doe sthe wevtibu;ar apparatus control
balance
what does the Cochlea control
hearing
what is the tympanic Membrane
the eardrum
has three layers
thin membrane that is tightly stretched
where is the auditory cortex located
Within the temporal lobe
what is another name for the auditory cortex
Hechl’s Gruys
hair cells in the organ of corti
4 rows of hair cells that cun the entire length of the organ of corit
how many outers (OHCs) are there
3
How many Inner (IHCs) are there
1
what are the tonotopic organizations
Basal end: High Frequencies
Apical End: Low frequencies
What are the functions of the outer ear
Channels sound energy to the tympanic membrane
Amplifies certain frequencies
Protect the tympanic membrane from harm
What is the Pinna?
Flesh coloured cartilage which is linked to the side of the head that catches sound waves
what is the ear canal
Carries sound waves to they tympanic membrane.
